func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     char ch[n];     ch[n] =   0 ;     int a[n][2];     for (int i = 0; i < n; i++) {       cin >> a[i][0] >> a[i][1];     }     int suma = 0;     int sumg = 0;     for (int i = 0; i < n; i++) {       if (((a[i][0] + suma) - sumg) <= 500) {         suma += a[i][0];         ch[i] =  A ;       } else if (((a[i][1] + sumg) - suma) <= 500) {         sumg += a[i][1];         ch[i] =  G ;       }     }     if ((abs(suma - sumg)) > 500) {       cout <<  -1 ;     } else {       cout << ch;     }   }   