Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:39:95: error: ‘find’ was not declared in this scope vector <pair <int,int> >::iterator it1 = find(a[x].begin(), a[x].end(), make_pair(y,g)); ^ user.cpp:60:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(g == 0) ^