Compilare: user.cpp:2:119: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] using namespace std;ifstream f("cufar.in");ofstream g("cufar.out");long long s;int t,n,x,k,o[1<<20],v[1<<20],i,j;main(){f>>t>>n;if(t==1)n=1;for(int i=1;i<=n;++i)f>>x>>k,v[x]=k;for(i=2;i<=1e6;++i)if(!o[i])for(j=i;j<=1e6;j+=i)if(++o[j]==v[j])s+=i;g<<s;} ^