func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n;     cin >> n;     long long a, b, f = 0;     long long min = 500, max = 0;     string s =   ;     long long suma = 0, sumb = 0;     for (int i = 0; i < n; i++) {       cin >> a >> b;       if (abs((suma + a) - sumb) <= 500) {         s +=  A ;         suma += a;       } else if (abs(suma - (sumb + b)) <= 500) {         s +=  G ;         sumb += b;       } else {         cout <<  -1 n ;         f = 1;         break;       }     }     if (f == 0) cout << s << endl;   }   