Compilare: main.cpp: In function 'bool r()': main.cpp:2:121: warning: statement has no effect [-Wunused-value] 2 | std::ifstream i("chess2.in");std::ofstream o("chess2.out");bool r(){int n,x,y,s=0;i>>n>>x>>y;x+=y;for(int i=0;i<n;i++){i>>y;s+=y;}return (x*n<s);}main(){int t;i>>t;while(t--){if(r()){o<<"Cheater\n";}else{o<<"Innocent\n";}}} | ~^~~ main.cpp: At global scope: main.cpp:2:147: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | std::ifstream i("chess2.in");std::ofstream o("chess2.out");bool r(){int n,x,y,s=0;i>>n>>x>>y;x+=y;for(int i=0;i<n;i++){i>>y;s+=y;}return (x*n<s);}main(){int t;i>>t;while(t--){if(r()){o<<"Cheater\n";}else{o<<"Innocent\n";}}} | ^~~~