func_code_string: #include <bits/stdc++.h>   using namespace std;   string raspuns;   long long n, x, y;   int read() {     char c;     int nr = 0;     c = getchar();     while (c <  0  || c >  9 ) c = getchar();     while (c >=  0  && c <=  9 ) {       nr = nr * 10 + (c -  0 );       c = getchar();     }     return nr;   }   int main() {     n = read();     long long sa, sg;     sa = sg = 0;     for (long long i = 0; i < n; i++) {       x = read();       y = read();       if (sa + x - sg <= 500) {         sa += x;         raspuns +=  A ;       } else if (sg + y - sa <= 500) {         sg += y;         raspuns +=  G ;       }     }     if (raspuns !=   0 )       cout << raspuns;     else       cout <<  -1 ;     return 0;   }   