#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <unordered_map>

using namespace std;


int main(){
    int n;
    int q;
    int c,p,qr,t;
    cin >> n >> q;
    string s;
    cin >> s;
    while(q--)
        {
        cin>>c;
        if(c==2)
            {
            cin>>p;
            cin>>qr;
            cout<<qr-p+1<<"\n";
        }
        else
            {
            cin>>p>>qr>>t;
        }
    }
    return 0;
}