#define _USE_MATH_DEFINES
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <queue>
#include <math.h>
#include <cmath>
#include <stack>
#include <map>
#include <set>
#include <numeric>
#include <iomanip>
#include <climits>
#include <functional>
#include <cassert>
#include <tuple>
using namespace std;
using ll = long long;

int N,Q;
string S;

int main() {

    cin >> N >> Q >> S;
    vector<int> hsum(2*N+1,0), wsum(2*N+1,0);
    for(int i = 0; i < 2*N; ++i) {
        hsum[i+1] = hsum[i];
        wsum[i+1] = wsum[i];
        if(S[i%N] == 'D') hsum[i+1]++;
        else wsum[i+1]++;
    }

    int hcnt = hsum[N];
    int wcnt = wsum[N];

    while(Q--) {
        int H, W, P; cin >> H >> W >> P;
        ll l = 0, r = 1e18;
        while(r-l>1) {
            ll mid = l+(r-l)/2;
            ll hans = mid/N*hcnt;
            ll wans = mid/N*wcnt;
            hans += hsum[(mid%N)+P]-hsum[P];
            wans += wsum[(mid%N)+P]-wsum[P];

            if(hans >= H || wans >= W) r = mid;
            else l = mid;
        }

        cout << (r+P)%N << endl;
        
    }

}