fn main() {
    let stdin = std::io::read_to_string(std::io::stdin().lock()).unwrap();
    let mut stdin = stdin.split_ascii_whitespace();

    unsafe {
        read!(stdin -> (_n: u32, q: u32, s: String, queries: Vec[(char, u32, u32); q]));
        write!(output(solve(s, queries)));
    }
}

fn solve(s: String, queries: Vec<(char, u32, u32)>) -> Vec<u32> {
    let mut st = mylib::SegmentTree::<S>::from(
        s.bytes()
            .map(|s| match s == b'(' {
                true => (0, 1),
                false => (1, 0),
            })
            .collect::<Vec<_>>(),
    );
    queries
        .into_iter()
        .filter_map(|(tp, l, r)| {
            if tp == '1' {
                st.update(
                    (l - 1) as usize,
                    match r == 1 {
                        true => (0, 1),
                        false => (1, 0),
                    },
                );
                None
            } else {
                let (rem_l, rem_r) = st.range_pick_up((l - 1) as usize, r as usize);
                Some(r - (l - 1) - rem_l - rem_r)
            }
        })
        .collect()
}

fn output(ans: Vec<u32>) -> String {
    format_vec!(ans, "\n", (x) -> ("{}", x))
}

struct S;

impl mylib::Monoid for S {
    type T = (u32, u32);
    const DEFAULT: Self::T = (0, 0);
    fn op(a: &Self::T, b: &Self::T) -> Self::T {
        match a.1 >= b.0 {
            true => (a.0, a.1 - b.0 + b.1),
            false => (a.0 + b.0 - a.1, b.1),
        }
    }
}

mod mylib {
    pub struct SegmentTree<S: Monoid> {
        container: Vec<Vec<S::T>>,
    }

    pub trait Monoid {
        type T: Clone;
        const DEFAULT: Self::T;
        fn op(a: &Self::T, b: &Self::T) -> Self::T;
    }

    impl<S: Monoid> SegmentTree<S> {
        pub fn update(&mut self, index: usize, value: S::T) {
            self.container[0][index] = value;
            for layer in 1..self.container.len() {
                self.container[layer][index >> layer] = S::op(
                    &self.container[layer - 1][(index >> layer) << 1],
                    &self.container[layer - 1][((index >> layer) << 1) | 1],
                );
            }
        }

        pub fn range_pick_up(&self, mut l: usize, mut r: usize) -> S::T {
            let mut ans_l = S::DEFAULT;
            let mut ans_r = S::DEFAULT;
            for layer in 0..self.container.len() {
                if l >= r {
                    break;
                }
                if (l & 1) == 1 {
                    ans_l = S::op(&ans_l, &self.container[layer][l]);
                    l += 1;
                }
                if (r & 1) == 1 {
                    ans_r = S::op(&self.container[layer][r - 1], &ans_r);
                    // r -= 1;
                }
                l >>= 1;
                r >>= 1;
            }

            S::op(&ans_l, &ans_r)
        }

        #[allow(unused)]
        pub fn len(&self) -> usize {
            self.container.first().unwrap_or(&vec![]).len()
        }

        #[allow(unused)]
        pub fn layer(&self) -> usize {
            self.container.len()
        }
    }

    impl<S: Monoid> From<Vec<S::T>> for SegmentTree<S> {
        fn from(mut value: Vec<S::T>) -> Self {
            let mut st = Self {
                container: Vec::<Vec<S::T>>::with_capacity(30),
            };
            if value.is_empty() {
                return st;
            }

            value.resize(value.len().next_power_of_two(), S::DEFAULT);
            st.container.push(value);

            while st.container.last().unwrap().len() > 1 {
                st.container.push(
                    st.container
                        .last()
                        .unwrap()
                        .chunks_exact(2)
                        .map(|x| S::op(&x[0], &x[1]))
                        .collect(),
                );
            }
            st
        }
    }

    impl<S: Monoid> Into<Vec<S::T>> for SegmentTree<S> {
        fn into(mut self) -> Vec<S::T> {
            self.container.swap_remove(0)
        }
    }

    impl<S: Monoid> std::ops::Index<usize> for SegmentTree<S> {
        type Output = S::T;
        fn index(&self, index: usize) -> &Self::Output {
            &self.container[0][index]
        }
    }
}

#[macro_export]
macro_rules! read {
    ($iter:ident -> ($v:ident : $t1:tt $([$($t2:tt)+] $({$($t3:tt)+})?)?)) => {
        let $v = read_value!($iter -> $t1 $([$($t2)+] $({$($t3)+})? )?);
    };

    ($iter:ident -> ($v:ident : $t1:tt $([$($t2:tt)+] $({$($t3:tt)+})?)? , $($r:tt)*)) => {
        read!($iter -> ($v : $t1 $([$($t2)+] $({$($t3)+})?)?));
        read!($iter -> ($($r)*));
    };
}

#[macro_export]
macro_rules! read_value {
    ($source:ident -> ($($t1:tt $([$($t2:tt)+])?),+)) => {
        ( $(read_value!($source -> $t1 $([$($t2)+])?)),* )
    };

    ($source:ident -> [ $t1:tt ; $len:expr ]) => {
        {
            let mut x: [::std::mem::MaybeUninit<$t1>; $len] = ::std::mem::MaybeUninit::uninit().assume_init();
            for elem in x.iter_mut() {
                elem.as_mut_ptr().write(read_value!($source -> $t1));
            }
            ::std::mem::transmute::<[::std::mem::MaybeUninit<$t1>; $len], [$t1; $len]>(x)
        }
    };

    ($source:ident -> [ $c2:tt [ $t1:tt $(; $len2:expr)? ] ; $len1:expr ]) => {
        {
            let mut x: [::std::mem::MaybeUninit<$c2<$t1>>; $len1] = unsafe { ::std::mem::MaybeUninit::uninit().assume_init() };
            for elem in x.iter_mut() {
                elem.as_mut_ptr().write(read_value!($source -> $c2 [ $t1 $(; $len2)? ]));
            }
            ::std::mem::transmute::<[::std::mem::MaybeUninit<$c2<$t1>>; $len1], [$c2<$t1>; $len1]>(x)
        }
    };

    ($source:ident -> $t1:tt[ $t2:tt $([$($t3:tt)+])? ; $len:expr ]) => {
        (0..($len)).map(|_| read_value!($source -> $t2 $([$($t3)+])?)).collect::<$t1<_>>()
    };

    ($source:ident -> $t1:tt[ $t2:tt $([$($t3:tt)+])? ]) => {
        (0..(read_value!($source -> u32))).map(|_| read_value!($source -> $t2 $([$($t3)+])?)).collect::<$t1<_>>()
    };

    ($source:ident -> $t1:tt[ ($($t2:tt),+) ; $len:expr ] { $($p1:pat => ($($pos:tt),*)),* }) => {
        (0..($len)).map(|_| {
            let mut v = ($($t2::default()),+);
            v.0 = my_parser::parse_without_checking(($source).next().unwrap());
            match v.0 {
                $($p1 => {
                    $(v.$pos = my_parser::parse_without_checking(($source).next().unwrap()));*
                }),*
                _ => unreachable!(),
            }
            v
        }).collect::<$t1<_>>()
    };

    ($source:ident -> $t1:tt[ ($($t2:tt),+) ] { $($p1:pat => ($($pos:tt),*)),* }) => {
        read_value!($source -> $t1[ ($($t2),+) ; read_value!($source -> u32) ] { $($p1 => ($($pos),*)),* })
    };

    ($source:ident -> $t:ty) => {
        my_parser::parse_without_checking::<$t>(($source).next().unwrap())
    };
}

mod my_parser {
    #[allow(unused)]
    pub unsafe fn parse_without_checking<F: std::str::FromStr + Parsable>(target: &str) -> F {
        unsafe { Parsable::from_str(target) }
    }

    pub trait Parsable {
        unsafe fn from_str(s: &str) -> Self;
    }

    impl Parsable for String {
        unsafe fn from_str(s: &str) -> Self {
            Self::from(s)
        }
    }

    impl Parsable for char {
        unsafe fn from_str(s: &str) -> Self {
            s.chars().next().unwrap()
        }
    }

    macro_rules! parse_float {
        ($s:ident) => {{
            let mut iter = $s.bytes().peekable();
            let sign = match iter.peek().unwrap() {
                b'-' => {
                    iter.next();
                    -1.0
                }
                b'+' => {
                    iter.next();
                    1.0
                }
                _ => 1.0,
            };

            let mut result = 0.0;
            while let Some(cur) = iter.next()
                && cur != b'.'
            {
                result = result * 10.0 + (cur - b'0') as Self;
            }
            let mut digit = 1.0;
            (result
                + iter
                    .map(|cur| {
                        digit *= 0.1;
                        digit * (cur - b'0') as Self
                    })
                    .sum::<Self>())
                * sign
        }};
    }

    impl Parsable for u8 {
        unsafe fn from_str(s: &str) -> Self {
            ((((s.bytes().fold(0, |acc, x| (acc << 8) | (x as u32)) & 0x0f0f0f0f)
                .wrapping_mul((1 << 8) + 10)
                >> 8)
                & 0x00ff00ff)
                .wrapping_mul((1 << 16) + 100)
                >> 16) as Self
        }
    }

    impl Parsable for u16 {
        unsafe fn from_str(s: &str) -> Self {
            ((((((s.bytes().fold(0, |acc, x| (acc << 8) | (x as u64)) & 0x0f0f0f0f0f0f0f0f)
                .wrapping_mul((1 << 8) + 10)
                >> 8)
                & 0x00ff00ff00ff00ff)
                .wrapping_mul((1 << 16) + 100)
                >> 16)
                & 0x0000ffff0000ffff)
                .wrapping_mul((1 << 32) + 10000)
                >> 32) as Self
        }
    }

    impl Parsable for u32 {
        unsafe fn from_str(s: &str) -> Self {
            ((((((((s.bytes().fold(0, |acc, x| (acc << 8) | (x as u128))
                & 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f)
                .wrapping_mul((1 << 8) + 10)
                >> 8)
                & 0x00ff00ff00ff00ff00ff00ff00ff00ff)
                .wrapping_mul((1 << 16) + 100)
                >> 16)
                & 0x0000ffff0000ffff0000ffff0000ffff)
                .wrapping_mul((1 << 32) + 10000)
                >> 32)
                & 0x00000000ffffffff00000000ffffffff)
                .wrapping_mul((1 << 64) + 100000000)
                >> 64) as Self
        }
    }

    impl Parsable for u64 {
        unsafe fn from_str(s: &str) -> Self {
            const POW_10: [u64; 17] = [
                1,
                10,
                100,
                1_000,
                10_000,
                100_000,
                1_000_000,
                10_000_000,
                100_000_000,
                1_000_000_000,
                10_000_000_000,
                100_000_000_000,
                1_000_000_000_000,
                10_000_000_000_000,
                100_000_000_000_000,
                1_000_000_000_000_000,
                10_000_000_000_000_000,
            ];
            s.as_bytes().chunks(16).fold(0, |acc, x| {
                acc * POW_10[x.len()]
                    + ((((((((x.into_iter().fold(0, |acc, &x| (acc << 8) | (x as u128))
                        & 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f)
                        .wrapping_mul((1 << 8) + 10)
                        >> 8)
                        & 0x00ff00ff00ff00ff00ff00ff00ff00ff)
                        .wrapping_mul((1 << 16) + 100)
                        >> 16)
                        & 0x0000ffff0000ffff0000ffff0000ffff)
                        .wrapping_mul((1 << 32) + 10000)
                        >> 32)
                        & 0x00000000ffffffff00000000ffffffff)
                        .wrapping_mul((1 << 64) + 100000000)
                        >> 64) as Self
            })
        }
    }

    impl Parsable for u128 {
        unsafe fn from_str(s: &str) -> Self {
            const POW_10: [u128; 17] = [
                1,
                10,
                100,
                1_000,
                10_000,
                100_000,
                1_000_000,
                10_000_000,
                100_000_000,
                1_000_000_000,
                10_000_000_000,
                100_000_000_000,
                1_000_000_000_000,
                10_000_000_000_000,
                100_000_000_000_000,
                1_000_000_000_000_000,
                10_000_000_000_000_000,
            ];
            s.as_bytes().chunks(16).fold(0, |acc, x| {
                acc * POW_10[x.len()]
                    + ((((((((x.into_iter().fold(0, |acc, &x| (acc << 8) | (x as u128))
                        & 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f)
                        .wrapping_mul((1 << 8) + 10)
                        >> 8)
                        & 0x00ff00ff00ff00ff00ff00ff00ff00ff)
                        .wrapping_mul((1 << 16) + 100)
                        >> 16)
                        & 0x0000ffff0000ffff0000ffff0000ffff)
                        .wrapping_mul((1 << 32) + 10000)
                        >> 32)
                        & 0x00000000ffffffff00000000ffffffff)
                        .wrapping_mul((1 << 64) + 100000000)
                        >> 64) as Self
            })
        }
    }

    impl Parsable for i8 {
        unsafe fn from_str(s: &str) -> Self {
            ((((((s
                .bytes()
                .skip(match s.as_bytes()[0].is_ascii_digit() {
                    true => 0,
                    false => 1,
                })
                .fold(0, |acc, x| (acc << 8) | (x as u32))
                & 0x0f0f0f0f)
                .wrapping_mul((1 << 8) + 10)
                >> 8)
                & 0x00ff00ff)
                .wrapping_mul((1 << 16) + 100)
                >> 16) as i32)
                * match s.as_bytes()[0] == b'-' {
                    true => -1,
                    false => 1,
                }) as Self
        }
    }

    impl Parsable for i16 {
        unsafe fn from_str(s: &str) -> Self {
            ((((((((s
                .bytes()
                .skip(match s.as_bytes()[0].is_ascii_digit() {
                    true => 0,
                    false => 1,
                })
                .fold(0, |acc, x| (acc << 8) | (x as u64))
                & 0x0f0f0f0f0f0f0f0f)
                .wrapping_mul((1 << 8) + 10)
                >> 8)
                & 0x00ff00ff00ff00ff)
                .wrapping_mul((1 << 16) + 100)
                >> 16)
                & 0x0000ffff0000ffff)
                .wrapping_mul((1 << 32) + 10000)
                >> 32) as i64)
                * match s.as_bytes()[0] == b'-' {
                    true => -1,
                    false => 1,
                }) as Self
        }
    }

    impl Parsable for i32 {
        unsafe fn from_str(s: &str) -> Self {
            ((((((((((s
                .bytes()
                .skip(match s.as_bytes()[0].is_ascii_digit() {
                    true => 0,
                    false => 1,
                })
                .fold(0, |acc, x| (acc << 8) | (x as u128))
                & 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f)
                .wrapping_mul((1 << 8) + 10)
                >> 8)
                & 0x00ff00ff00ff00ff00ff00ff00ff00ff)
                .wrapping_mul((1 << 16) + 100)
                >> 16)
                & 0x0000ffff0000ffff0000ffff0000ffff)
                .wrapping_mul((1 << 32) + 10000)
                >> 32)
                & 0x00000000ffffffff00000000ffffffff)
                .wrapping_mul((1 << 64) + 100000000)
                >> 64) as i128)
                * match s.as_bytes()[0] == b'-' {
                    true => -1,
                    false => 1,
                }) as Self
        }
    }

    impl Parsable for i64 {
        unsafe fn from_str(s: &str) -> Self {
            const POW_10: [u64; 17] = [
                1,
                10,
                100,
                1_000,
                10_000,
                100_000,
                1_000_000,
                10_000_000,
                100_000_000,
                1_000_000_000,
                10_000_000_000,
                100_000_000_000,
                1_000_000_000_000,
                10_000_000_000_000,
                100_000_000_000_000,
                1_000_000_000_000_000,
                10_000_000_000_000_000,
            ];
            let skip = match s.as_bytes()[0].is_ascii_digit() {
                true => 0,
                false => 1,
            };
            ((s.as_bytes()[skip..].chunks(16).fold(0, |acc, x| {
                acc * POW_10[x.len()]
                    + ((((((((x.into_iter().fold(0, |acc, &x| (acc << 8) | (x as u128))
                        & 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f)
                        .wrapping_mul((1 << 8) + 10)
                        >> 8)
                        & 0x00ff00ff00ff00ff00ff00ff00ff00ff)
                        .wrapping_mul((1 << 16) + 100)
                        >> 16)
                        & 0x0000ffff0000ffff0000ffff0000ffff)
                        .wrapping_mul((1 << 32) + 10000)
                        >> 32)
                        & 0x00000000ffffffff00000000ffffffff)
                        .wrapping_mul((1 << 64) + 100000000)
                        >> 64) as u64
            }) as i64)
                * match s.as_bytes()[0] == b'-' {
                    true => -1,
                    false => 1,
                }) as Self
        }
    }

    impl Parsable for i128 {
        unsafe fn from_str(s: &str) -> Self {
            const POW_10: [u128; 17] = [
                1,
                10,
                100,
                1_000,
                10_000,
                100_000,
                1_000_000,
                10_000_000,
                100_000_000,
                1_000_000_000,
                10_000_000_000,
                100_000_000_000,
                1_000_000_000_000,
                10_000_000_000_000,
                100_000_000_000_000,
                1_000_000_000_000_000,
                10_000_000_000_000_000,
            ];
            let skip = match s.as_bytes()[0].is_ascii_digit() {
                true => 0,
                false => 1,
            };
            ((s.as_bytes()[skip..].chunks(16).fold(0, |acc, x| {
                acc * POW_10[x.len()]
                    + ((((((((x.into_iter().fold(0, |acc, &x| (acc << 8) | (x as u128))
                        & 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f)
                        .wrapping_mul((1 << 8) + 10)
                        >> 8)
                        & 0x00ff00ff00ff00ff00ff00ff00ff00ff)
                        .wrapping_mul((1 << 16) + 100)
                        >> 16)
                        & 0x0000ffff0000ffff0000ffff0000ffff)
                        .wrapping_mul((1 << 32) + 10000)
                        >> 32)
                        & 0x00000000ffffffff00000000ffffffff)
                        .wrapping_mul((1 << 64) + 100000000)
                        >> 64)
            }) as i128)
                * match s.as_bytes()[0] == b'-' {
                    true => -1,
                    false => 1,
                }) as Self
        }
    }

    impl Parsable for f32 {
        unsafe fn from_str(s: &str) -> Self {
            parse_float!(s)
        }
    }

    impl Parsable for f64 {
        unsafe fn from_str(s: &str) -> Self {
            parse_float!(s)
        }
    }
}

#[macro_export]
macro_rules! write {
    ($out:expr) => {{
        use std::io::Write;
        std::io::stdout()
            .lock()
            .write_all(($out).as_bytes())
            .unwrap();
    }};
}

#[macro_export]
macro_rules! format_iter {
    ($i:expr, $sep:expr, ($($elem:ident),+) -> ($form:expr $(, $ex:expr)*)) => {{
        let mut iter = $i;
        #[allow(unused_parens)]
        let ($($elem),+) = iter.next().unwrap();
        #[allow(unused_parens)]
        iter.fold(std::format!($form $(, $ex)*), |mut acc, ($($elem),+)| {
            use std::fmt::Write;
            acc.push_str($sep);
            std::write!(&mut acc, $form $(, $ex)*).unwrap();
            acc
        })
    }}
}

#[macro_export]
macro_rules! format_vec {
    ($v:expr, $sep:expr, ($($elem:ident),+) -> ($form:expr $(, $ex:expr)*)) => {{
        if $v.is_empty() {
            String::new()
        } else {
            let mut v = $v;
            #[allow(unused_parens)]
            let ($($elem),+) = v.drain(..1).next().unwrap();
            #[allow(unused_parens)]
            v.into_iter().fold(std::format!($form $(, $ex)*), |mut acc, ($($elem),+)| {
                use std::fmt::Write;
                acc.push_str($sep);
                std::write!(&mut acc, $form $(, $ex)*).unwrap();
                acc
            })
        }
    }}
}

#[macro_export]
macro_rules! format_vec_vec {
    ($v:expr, $sep1:expr, $sep2:expr, ($($elem:ident),+) -> ($form:expr $(, $ex:expr)*)) => {{
        let mut v = $v;
        let v_first = v.drain(..1).next().unwrap();
        #[allow(unused_parens)]
        v.into_iter().fold(format_vec!(v_first, $sep2, ($($elem),+) -> ($form $(, $ex)*)), |mut acc, mut v| {
            use std::fmt::Write;
            acc.push_str($sep1);
            let ($($elem),+) = v.drain(..1).next().unwrap();
            std::write!(&mut acc, $form $(, $ex)*).unwrap();
            v.into_iter().fold(acc, |mut acc, ($($elem),+)| {
                acc.push_str($sep2);
                std::write!(&mut acc, $form $(, $ex)*).unwrap();
                acc
            })
        })
    }}
}