#ifndef LOCAL
#define FAST_IO
#endif

// ============
#include <bits/stdc++.h>
#define OVERRIDE(a, b, c, d, ...) d
#define REP2(i, n) for (i32 i = 0; i < (i32)(n); ++i)
#define REP3(i, m, n) for (i32 i = (i32)(m); i < (i32)(n); ++i)
#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
#define PER2(i, n) for (i32 i = (i32)(n)-1; i >= 0; --i)
#define PER3(i, m, n) for (i32 i = (i32)(n)-1; i >= (i32)(m); --i)
#define PER(...) OVERRIDE(__VA_ARGS__, PER3, PER2)(__VA_ARGS__)
#define ALL(x) begin(x), end(x)
#define LEN(x) (i32)(x.size())
using namespace std;
using u32 = unsigned int;
using u64 = unsigned long long;
using i32 = signed int;
using i64 = signed long long;
using f64 = double;
using f80 = long double;
using pi = pair<i32, i32>;
using pl = pair<i64, i64>;
template <typename T>
using V = vector<T>;
template <typename T>
using VV = V<V<T>>;
template <typename T>
using VVV = V<V<V<T>>>;
template <typename T>
using VVVV = V<V<V<V<T>>>>;
template <typename T>
using PQR = priority_queue<T, V<T>, greater<T>>;
template <typename T>
bool chmin(T &x, const T &y) {
    if (x > y) {
        x = y;
        return true;
    }
    return false;
}
template <typename T>
bool chmax(T &x, const T &y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}
template <typename T>
i32 lob(const V<T> &arr, const T &v) {
    return (i32)(lower_bound(ALL(arr), v) - arr.begin());
}
template <typename T>
i32 upb(const V<T> &arr, const T &v) {
    return (i32)(upper_bound(ALL(arr), v) - arr.begin());
}
template <typename T>
V<i32> argsort(const V<T> &arr) {
    V<i32> ret(arr.size());
    iota(ALL(ret), 0);
    sort(ALL(ret), [&](i32 i, i32 j) -> bool {
        if (arr[i] == arr[j]) {
            return i < j;
        } else {
            return arr[i] < arr[j];
        }
    });
    return ret;
}
#ifdef INT128
using u128 = __uint128_t;
using i128 = __int128_t;
#endif
[[maybe_unused]] constexpr i32 INF = 1000000100;
[[maybe_unused]] constexpr i64 INF64 = 3000000000000000100;
struct SetUpIO {
    SetUpIO() {
#ifdef FAST_IO
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
#endif
        cout << fixed << setprecision(15);
    }
} set_up_io;
void scan(char &x) { cin >> x; }
void scan(u32 &x) { cin >> x; }
void scan(u64 &x) { cin >> x; }
void scan(i32 &x) { cin >> x; }
void scan(i64 &x) { cin >> x; }
void scan(string &x) { cin >> x; }
template <typename T>
void scan(V<T> &x) {
    for (T &ele : x) {
        scan(ele);
    }
}
void read() {}
template <typename Head, typename... Tail>
void read(Head &head, Tail &...tail) {
    scan(head);
    read(tail...);
}
#define CHAR(...)     \
    char __VA_ARGS__; \
    read(__VA_ARGS__);
#define U32(...)     \
    u32 __VA_ARGS__; \
    read(__VA_ARGS__);
#define U64(...)     \
    u64 __VA_ARGS__; \
    read(__VA_ARGS__);
#define I32(...)     \
    i32 __VA_ARGS__; \
    read(__VA_ARGS__);
#define I64(...)     \
    i64 __VA_ARGS__; \
    read(__VA_ARGS__);
#define STR(...)        \
    string __VA_ARGS__; \
    read(__VA_ARGS__);
#define VEC(type, name, size) \
    V<type> name(size);       \
    read(name);
#define VVEC(type, name, size1, size2)    \
    VV<type> name(size1, V<type>(size2)); \
    read(name);
// ============

#ifdef DEBUGF
#else
#define DBG(...) (void)0
#endif

// ============

#include <cassert>
#include <iostream>
#include <type_traits>
// ============

constexpr bool is_prime(unsigned n) {
    if (n == 0 || n == 1) {
        return false;
    }
    for (unsigned i = 2; i * i <= n; ++i) {
        if (n % i == 0) {
            return false;
        }
    }
    return true;
}

constexpr unsigned mod_pow(unsigned x, unsigned y, unsigned mod) {
    unsigned ret = 1, self = x;
    while (y != 0) {
        if (y & 1) {
            ret = (unsigned)((unsigned long long)ret * self % mod);
        }
        self = (unsigned)((unsigned long long)self * self % mod);
        y /= 2;
    }
    return ret;
}

template <unsigned mod>
constexpr unsigned primitive_root() {
    static_assert(is_prime(mod), "`mod` must be a prime number.");
    if (mod == 2) {
        return 1;
    }

    unsigned primes[32] = {};
    int it = 0;
    {
        unsigned m = mod - 1;
        for (unsigned i = 2; i * i <= m; ++i) {
            if (m % i == 0) {
                primes[it++] = i;
                while (m % i == 0) {
                    m /= i;
                }
            }
        }
        if (m != 1) {
            primes[it++] = m;
        }
    }
    for (unsigned i = 2; i < mod; ++i) {
        bool ok = true;
        for (int j = 0; j < it; ++j) {
            if (mod_pow(i, (mod - 1) / primes[j], mod) == 1) {
                ok = false;
                break;
            }
        }
        if (ok) return i;
    }
    return 0;
}

// y >= 1
template <typename T>
constexpr T safe_mod(T x, T y) {
    x %= y;
    if (x < 0) {
        x += y;
    }
    return x;
}

// y != 0
template <typename T>
constexpr T floor_div(T x, T y) {
    if (y < 0) {
        x *= -1;
        y *= -1;
    }
    if (x >= 0) {
        return x / y;
    } else {
        return -((-x + y - 1) / y);
    }
}

// y != 0
template <typename T>
constexpr T ceil_div(T x, T y) {
    if (y < 0) {
        x *= -1;
        y *= -1;
    }
    if (x >= 0) {
        return (x + y - 1) / y;
    } else {
        return -(-x / y);
    }
}
// ============

template <unsigned mod>
struct ModInt {
    static_assert(mod != 0, "`mod` must not be equal to 0.");
    static_assert(mod < (1u << 31),
                  "`mod` must be less than (1u << 31) = 2147483648.");

    unsigned val;

    static constexpr unsigned get_mod() { return mod; }

    constexpr ModInt() : val(0) {}
    template <typename T, std::enable_if_t<std::is_signed_v<T>> * = nullptr>
    constexpr ModInt(T x)
        : val((unsigned)((long long)x % (long long)mod + (x < 0 ? mod : 0))) {}
    template <typename T, std::enable_if_t<std::is_unsigned_v<T>> * = nullptr>
    constexpr ModInt(T x) : val((unsigned)(x % mod)) {}

    static constexpr ModInt raw(unsigned x) {
        ModInt<mod> ret;
        ret.val = x;
        return ret;
    }

    constexpr unsigned get_val() const { return val; }

    constexpr ModInt operator+() const { return *this; }
    constexpr ModInt operator-() const { return ModInt<mod>(0u) - *this; }

    constexpr ModInt &operator+=(const ModInt &rhs) {
        val += rhs.val;
        if (val >= mod) val -= mod;
        return *this;
    }
    constexpr ModInt &operator-=(const ModInt &rhs) {
        val -= rhs.val;
        if (val >= mod) val += mod;
        return *this;
    }
    constexpr ModInt &operator*=(const ModInt &rhs) {
        val = (unsigned long long)val * rhs.val % mod;
        return *this;
    }
    constexpr ModInt &operator/=(const ModInt &rhs) {
        val = (unsigned long long)val * rhs.inv().val % mod;
        return *this;
    }

    friend constexpr ModInt operator+(const ModInt &lhs, const ModInt &rhs) {
        return ModInt<mod>(lhs) += rhs;
    }
    friend constexpr ModInt operator-(const ModInt &lhs, const ModInt &rhs) {
        return ModInt<mod>(lhs) -= rhs;
    }
    friend constexpr ModInt operator*(const ModInt &lhs, const ModInt &rhs) {
        return ModInt<mod>(lhs) *= rhs;
    }
    friend constexpr ModInt operator/(const ModInt &lhs, const ModInt &rhs) {
        return ModInt<mod>(lhs) /= rhs;
    }

    constexpr ModInt pow(unsigned long long x) const {
        ModInt<mod> ret = ModInt<mod>::raw(1);
        ModInt<mod> self = *this;
        while (x != 0) {
            if (x & 1) ret *= self;
            self *= self;
            x >>= 1;
        }
        return ret;
    }
    constexpr ModInt inv() const {
        static_assert(is_prime(mod), "`mod` must be a prime number.");
        assert(val != 0);
        return this->pow(mod - 2);
    }

    friend std::istream &operator>>(std::istream &is, ModInt<mod> &x) {
        long long val;
        is >> val;
        x.val = val % mod + (val < 0 ? mod : 0);
        return is;
    }

    friend std::ostream &operator<<(std::ostream &os, const ModInt<mod> &x) {
        os << x.val;
        return os;
    }

    friend bool operator==(const ModInt &lhs, const ModInt &rhs) {
        return lhs.val == rhs.val;
    }

    friend bool operator!=(const ModInt &lhs, const ModInt &rhs) {
        return lhs.val != rhs.val;
    }
};

template <unsigned mod>
void debug(ModInt<mod> x) {
    std::cerr << x.val;
}
// ============
// ============

#include <cassert>
#include <utility>
#include <vector>
// ============

#include <algorithm>
#include <limits>
#include <utility>

template <typename T>
struct Add {
    using Value = T;
    static Value id() { return T(0); }
    static Value op(const Value &lhs, const Value &rhs) { return lhs + rhs; }
    static Value inv(const Value &x) { return -x; }
};

template <typename T>
struct Mul {
    using Value = T;
    static Value id() { return Value(1); }
    static Value op(const Value &lhs, const Value &rhs) { return lhs * rhs; }
    static Value inv(const Value &x) { return Value(1) / x; }
};

template <typename T>
struct Min {
    static_assert(std::numeric_limits<T>::is_specialized);
    using Value = T;
    static Value id() { return std::numeric_limits<T>::max(); }
    static Value op(const Value &lhs, const Value &rhs) {
        return std::min(lhs, rhs);
    }
};

template <typename T>
struct Max {
    static_assert(std::numeric_limits<T>::is_specialized);
    using Value = T;
    static Value id() { return std::numeric_limits<Value>::min(); }
    static Value op(const Value &lhs, const Value &rhs) {
        return std::max(lhs, rhs);
    }
};

template <typename T>
struct Xor {
    using Value = T;
    static Value id() { return T(0); }
    static Value op(const Value &lhs, const Value &rhs) { return lhs ^ rhs; }
    static Value inv(const Value &x) { return x; }
};

template <typename Monoid>
struct Reversible {
    using Value = std::pair<typename Monoid::Value, typename Monoid::Value>;
    static Value id() { return Value(Monoid::id(), Monoid::id()); }
    static Value op(const Value &v1, const Value &v2) {
        return Value(Monoid::op(v1.first, v2.first),
                     Monoid::op(v2.second, v1.second));
    }
};
// ============

template <typename Monoid>
class SegmentTree {
public:
    using Value = typename Monoid::Value;

private:
    int old_length;
    int length;
    std::vector<Value> node;

    static int ceil2(int n) {
        int l = 1;
        while (l < n) {
            l <<= 1;
        }
        return l;
    }

public:
    SegmentTree(int n)
        : old_length(n),
          length(ceil2(old_length)),
          node(length << 1, Monoid::id()) {
        assert(n >= 0);
    }

    SegmentTree(const std::vector<Value> &v)
        : old_length((int)v.size()),
          length(ceil2(old_length)),
          node(length << 1, Monoid::id()) {
        for (int i = 0; i < old_length; ++i) {
            node[i + length] = v[i];
        }
        for (int i = length - 1; i > 0; --i) {
            node[i] = Monoid::op(node[i << 1], node[i << 1 | 1]);
        }
    }

    template <typename F>
    SegmentTree(int n, const F &f)
        : old_length(n), length(ceil2(n)), node(length << 1, Monoid::id()) {
        assert(n >= 0);
        for (int i = 0; i < old_length; ++i) {
            node[i + length] = f(i);
        }
        for (int i = length - 1; i > 0; --i) {
            node[i] = Monoid::op(node[i << 1], node[i << 1 | 1]);
        }
    }

    const Value &operator[](int idx) const {
        assert(idx >= 0 && idx < old_length);
        return node[idx + length];
    }

    void update(int idx, Value val) {
        assert(idx >= 0 && idx < old_length);
        idx += length;
        node[idx] = std::move(val);
        while (idx != 1) {
            idx >>= 1;
            node[idx] = Monoid::op(node[idx << 1], node[idx << 1 | 1]);
        }
    }

    Value prod(int l, int r) const {
        assert(l >= 0 && l <= r && r <= old_length);
        Value prodl = Monoid::id();
        Value prodr = Monoid::id();
        l += length;
        r += length;
        while (l != r) {
            if (l & 1) {
                prodl = Monoid::op(prodl, node[l++]);
            }
            if (r & 1) {
                prodr = Monoid::op(node[--r], prodr);
            }
            l >>= 1;
            r >>= 1;
        }
        return Monoid::op(prodl, prodr);
    }

    Value all_prod() const { return node[1]; }
};
// ============

using M = ModInt<998244353>;

struct Data {
    M zl, zr, sumlr, suml, sumr, sum;
    i32 zero, one;
    i32 len() const { return zero + one; }
    pair<M, M> olor() const {
        i32 l = len();
        M tot = M((i64)l * (l + 1) / 2);
        return make_pair(tot - zl, tot - zr);
    }
};

struct Ops {
    using Value = Data;
    static Data id() {
        return Data{M(), M(), M(), M(), M(), M(), 0, 0};
    }
    static Data op(Data l, Data r) {
        Data ret;
        ret.zl = l.zl + r.zl + M(l.len()) * M(r.zero);
        ret.zr = r.zr + l.zr + M(r.len()) * M(l.zero);
        auto [lol, lor] = l.olor();
        auto [rol, ror] = r.olor();
        ret.sum = l.sum + r.sum + l.zero * r.one + l.one * r.zero;
        ret.suml = l.suml + (r.suml + r.sum * l.len()) + l.zl * r.one + lol * r.zero;
        ret.sumr = r.sumr + (l.sumr + l.sum * r.len()) + r.zr * l.one + ror * l.zero;
        ret.sumlr = (l.sumlr + l.suml * r.len()) + (r.sumlr + r.sumr * l.len()) + l.zl * ror + lol * r.zr;
        ret.zero = l.zero + r.zero;
        ret.one = l.one + r.one;
        return ret;
    }
    static Data _zero() {
        return Data{M(1), M(1), M(), M(), M(), M(), 1, 0};
    }
    static Data _one() {
        return Data{M(), M(), M(), M(), M(), M(), 0, 1};
    }
};

void solve() {
    I32(n, q);
    STR(s);
    SegmentTree<Ops> seg(n, [&](i32 i) -> Data {
        return (s[i] == '0' ? Ops::_zero() : Ops::_one());
    });
    REP(qi, q) {
        I32(type);
        if (type == 1) {
            I32(i);
            --i;
            s[i] ^= '0' ^ '1';
            seg.update(i, (s[i] == '0' ? Ops::_zero() : Ops::_one()));
        } else {
            I32(l, r);
            --l;
            Data prod = seg.prod(l, r);
            DBG(prod.zl, prod.zr, prod.sum, prod.suml, prod.sumr, prod.sumlr);
            cout << prod.sumlr << '\n';
        }
    }
}

int main() {
    i32 t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
}