Compilare: user.cpp:3:103: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] std::string s="cocochanel.";std::ifstream f(s+"in");std::ofstream g(s+"out");int n,m,v[(int)1e5];main(){int i,x,m2;f>>n>>m;for(i=0;i<n;++i)f>>v[i];f>>m2;for(i=1;i<m;++i){f>>x;if(x>m2)m2=x;}for(i=0;i<n;++i){if(m2<v[i])g<<0;else{x=log2(m2/v[i])+1;if(x>m)g<<m;else g<<x;}g<<"\n";}} ^