/*
 * author:  ADMathNoob
 * created: 05/17/24 20:37:58
 * problem: https://qoj.ac/problem/5652
 */

/*
Comments about problem:


*/

#include <bits/stdc++.h>

using namespace std;

#ifdef _DEBUG
#include "debug.h"
#else
#define debug(...) 42
#endif

bool Solve(int p, int m, int a, int b) {
  int c = a - b;
  int rhs = (m - p) * b;
  if (rhs == 0) {
    return true;
  }
  if (c == 0) {
    return false;
  }
  if (rhs % c != 0) {
    return false;
  }
  int d = rhs / c;
  return -m <= d && d <= p;
}

int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  int p = 0, m = 0;
  for (int i = 0; i < n; i++) {
    char c;
    cin >> c;
    if (c == '+') {
      p += 1;
    } else {
      m += 1;
    }
  }
  int tt;
  cin >> tt;
  while (tt--) {
    int a, b;
    cin >> a >> b;
    cout << (Solve(p, m, a, b) ? "YES" : "NO") << '\n';
  }
  return 0;
}