func_code_string: #include <bits/stdc++.h>   using namespace std;   string s[110];   int n, d;   int m;   int main() {     cin >> n >> d;     cin >> m;     for (int i = 0; i < m; ++i) {       int x, y;       cin >> x >> y;       bool t = false;       if (!((x - y) <= d && (x - y) >= -d)) t = true;       if (!((x + y) <= n + n - d && (x + y) >= d)) t = true;       if (t == true)         s[i] =  NO ;       else         s[i] =  YES ;     }     for (int i = 0; i < m; i++) cout << s[i] << endl;     return 0;   }   