#![allow(unused_imports)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;
use std::ops::Bound::*;

#[allow(unused_macros)]
macro_rules! debug {
    ($($e:expr),*) => {
        #[cfg(debug_assertions)]
        $({
            let (e, mut err) = (stringify!($e), std::io::stderr());
            writeln!(err, "{} = {:?}", e, $e).unwrap()
        })*
    };
}

fn main() {
    let n = read::<usize>();
    let mut a = read_vec::<i64>();

    let num_buckets = 1000;
    let bucket_width = 3;
    let mut bucket_added = vec![0; num_buckets];
    let mut bucket_min = vec![std::i64::MAX; num_buckets];

    for i in 0..n {
        bucket_min[i / bucket_width] = min(a[i], bucket_min[i / bucket_width]);
    }

    let q = read::<usize>();
    let mut queries = vec![];
    for i in 0..q {
        let v = read_vec::<i64>();
        let (k, l, r, c) = (v[0], v[1] as usize - 1, v[2] as usize - 1, v[3]);
        queries.push((k, l, r, c));
    }

    for (k, l, r, c) in queries {
        if k == 1 {
            let mut tl = 0;
            let mut tr = bucket_width - 1;
            for bi in 0..num_buckets {
                if r < tl || l > tr {
                    // Nothing
                } else if l <= tl && r >= tr {
                    bucket_added[bi] += c;
                    bucket_min[bi] += c;
                } else {
                    for i in 0..bucket_width {
                        if i + tl >= l && i + tl <= r {
                            a[i + tl] += c;
                        }
                    }
                    bucket_min[bi] = std::i64::MAX;
                    for i in 0..bucket_width {
                        if i + tl >= n {
                            break;
                        }
                        bucket_min[bi] = min(a[i + tl] + bucket_added[bi], bucket_min[bi]);
                    }
                }
                tl += bucket_width;
                tr += bucket_width;
            }
        } else {
            let mut tl = 0;
            let mut tr = bucket_width - 1;
            let mut ans = std::i64::MAX;
            for bi in 0..num_buckets {
                if r < tl || l > tr {
                    // Nothing
                } else if l <= tl && r >= tr {
                    ans = min(ans, bucket_min[bi]);
                } else {
                    for i in 0..bucket_width {
                        if i + tl >= l && i + tl <= r {
                            if i + tl >= n {
                                break;
                            }

                            ans = min(ans, a[i + tl] + bucket_added[bi]);
                        }
                    }
                }
                tl += bucket_width;
                tr += bucket_width;
            }
            println!("{}", ans);
        }
    }
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}