题号P1401,话不多说，上代码：

#include<bits/stdc++.h>
using namespace std;
#define s 0x7fffffff
int main()
{
long long a,b,c,d;
cin>>a>>b>>c>>d;
if(b*d>s||b*c>s||a*d>s||a*c>s)
{
cout<<"long long int"<<endl;
}else
cout<<"int"<<endl;
}