#include <bits/stdc++.h>
using namespace std;
#define rep(i, s, e) for (int i = s; i < e; ++i)
#define sort_(a) stable_sort(a.begin(), a.end())
#define rsort(a) stable_sort(a.rbegin(), a.rend())
#define sum(a) accumulate(a.begin(), a.end(), 0LL)
#define join(a, d) accumulate(a.begin() + 1, a.end(), a[0], [](string s, string t) { return s + d + t; })
#define all(a) a.begin(), a.end()
#define degrees(a) a * 180.0 / M_PI;
#define radians(a) (a * M_PI) / 180.0;
// #define __lcm(a, b) std::__detail::__lcm(a, b)
typedef long long ll;
const long mod = 1e9 + 7;

int main(void) {
#ifdef DEBUG
  freopen("input.txt", "r", stdin);
#endif

  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(15);

  int N, Q, L, R, X;
  cin >> N >> Q;
  string S;
  cin >> S;
  string s;
  rep(i, 0, Q) {
    cin >> L >> R >> X;
    s = S.substr(L - 1, R - L + 1);
    sort_(s);
    cout << s[X - 1] << endl;
  }

  return 0;
}