func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int t;     t = 1;     while (t--) {       long long int n;       cin >> n;       long long int x, y, i;       long long int suma = 0, sumb = 0;       bool found = false;       vector<char> v;       for (i = 0; i < n; i++) {         cin >> x >> y;         suma += x;         if (abs(suma - sumb) <= 500 && !found)           v.push_back( A );         else {           suma -= x;           sumb += y;           if (abs(suma - sumb) <= 500 && !found)             v.push_back( G );           else             found = true;         }       }       if (found)         cout <<  -1 n ;       else {         for (i = 0; i < v.size(); i++) cout << v[i];         cout <<   n ;       }     }     return 0;   }   