#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long x1,x2,y1,y2;
    cin>>x1>>x2>>y1>>y2;
    if(x2*y2>pow(2,31)-1||x1*y1<0-pow(2,31))cout<<"long long int";
    else cout<<"int";
}

代码如上，8个WA，负数也考虑了，调一下吧