#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
using mint = modint998244353;
const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n) - 1; i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r) - 1;i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
template<typename T>
struct Matrix {
	int row, column;
	std::vector<std::vector<T>>mat;
	Matrix(int r = 0, int c = 0, T val = 0) :row(r), column(c) {
		mat = std::vector<std::vector<T>>(row, std::vector<T>(column, val));
	}
	std::vector<T>& operator[](const int i) {
		return mat[i];
	}
	Matrix& operator+=(const Matrix & other) {
		assert(row == other.row && column == other.column);
		for (int i = 0; i < row; ++i) {
			for (int j = 0; j < column; ++j) {
				mat[i][j] += other.mat[i][j];
			}
		}
		return *this;
	}
	Matrix& operator-=(const Matrix & other) {
		assert(row == other.row && column == other.column);
		for (int i = 0; i < row; ++i) {
			for (int j = 0; j < column; ++j) {
				mat[i][j] -= other.mat[i][j];
			}
		}
		return *this;
	}
	Matrix& operator*=(const Matrix & other) {
		assert(column == other.row);
		Matrix ret(row, other.column);
		for (int i = 0; i < row; ++i) {
			for (int k = 0; k < column; ++k) {
				for (int j = 0; j < other.column; ++j) {
					ret.mat[i][j] += mat[i][k] * other.mat[k][j];
				}
			}
		}
		return *this = ret;
	}
	Matrix& operator*=(T k) {
		for (int i = 0; i < row; ++i) {
			for (int j = 0; j < column; ++j) {
				mat[i][j] *= k;
			}
		}
		return *this;
	}
	Matrix operator+(const Matrix other)const { return Matrix(*this) += other; }
	Matrix operator-(const Matrix other)const { return Matrix(*this) -= other; }
	Matrix operator*(const Matrix other)const { return Matrix(*this) *= other; }
	Matrix operator*(const T k)const { return Matrix(*this) *= k; }
	std::vector<T> operator*(const std::vector<T> other) const {
		assert(column == (int)other.size());
		std::vector<T> ret(row);
		for (int i = 0; i < row; ++i) {
			for (int j = 0; j < column; ++j) {
				ret[i] += mat[i][j] * other[j];
			}
		}
		return ret;
	}
	Matrix pow(long long n) const {
		assert(row == column);
		if (n == 0) {
			Matrix e(row, column);
			for (int i = 0; i < row; ++i) e.mat[i][i] = 1;
			return e;
		}
		Matrix ret = pow(n >> 1);
		ret *= ret;
		if (n & 1) ret *= *this;
		return ret;
	}
	Matrix debug() {
		for (int i = 0; i < row; ++i) {
			for (int j = 0; j < column; ++j) std::cout << mat[i][j] << " ";
			std::cout << std::endl;
		}
	}
	mint det() {
		auto copyMat = mat;
		mint res = 1;
		for (int i = 0; i < row; ++i) {
			for (int j = i; j < row; ++j) {
				if (0 == copyMat[j][i])continue;
				if (i != j) {
					std::swap(copyMat[i], copyMat[j]);
					res *= -1;
				}
			}
			if (0 == copyMat[i][i])return 0;
			res *= copyMat[i][i];
			mint inv = mint(1) / copyMat[i][i];
			for (int j = 0; j < column; ++j) {
				copyMat[i][j] *= inv;
			}
			for (int j = i + 1; j < row; ++j) {
				mint c = copyMat[j][i];
				for (int k = i; k < column; ++k) {
					copyMat[j][k] -= c * copyMat[i][k];
				}
			}
		}
		return res;
	}
};
Matrix<mint> op(Matrix<mint> a, Matrix<mint> b) { return b * a; }
Matrix<mint> e() {
	auto e = Matrix<mint>(3, 3);
	rep(i, 3)e[i][i] = 1;
	return e;
}
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	auto unit = Matrix<mint>(3, 3);
	unit[0] = { 1, 0, 0 };
	unit[1] = { 0, 1, 0 };
	unit[2] = { 0, 0, 1 };
	auto zero = Matrix<mint>(3, 3);
	zero[0] = { 1, 1, 0 };
	zero[1] = { 0, 1, 0 };
	zero[2] = { 0, 0, 1 };
	auto one = Matrix<mint>(3, 3);
	one[0] = { 1, 0, 0 };
	one[1] = { 1, 1, 1 };
	one[2] = { 0, 0, 1 };
	int n, q; cin >> n >> q;
	string s; cin >> s;
	vector<Matrix<mint>>init(n);
	rep(i, n) {
		if ('0' == s[i])init[i] = zero;
		else init[i] = one;
	}
	segtree<Matrix<mint>, op, e>seg(init);
	set<int>st;
	rep(i, n)st.insert(i);
	while (q--) {
		int t, l, r; cin >> t >> l >> r;
		l--;
		if (1 == t) {
			auto ite = st.lower_bound(l);
			while (ite != st.end() && *ite < r) {
				seg.set(*ite, unit);
				ite = st.erase(ite);
			}
		}
		else {
			auto get = seg.prod(l, r);
			mint ans = get[0][2] + get[1][2];
			cout << ans.val() << endl;
		}
	}
	return 0;
}