Eroare de compilare: main.cpp: In function 'int main()': main.cpp:25:30: error: 'sum' was not declared in this scope if(per[i].first<=x) {sum=sum+per[i].second;} ^~~ main.cpp:27:11: error: 'sum' was not declared in this scope fout<<sum; ^~~ main.cpp:14:15: warning: unused variable 'a' [-Wunused-variable] int n,x,l,a,b; ^ main.cpp:14:17: warning: unused variable 'b' [-Wunused-variable] int n,x,l,a,b; ^ Non zero exit status: 1