题目：P1401 or B3906
分数：99 and 100 代码（两题一样）：

#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long a1,a2,b1,b2,g=0,h=0,gao=2147483647,di=-2147483648;
	cin>>a1>>a2>>b1>>b2;
	g=a2*b2;
	h=a1*b1;
	if(g>=gao || h<=di)
	{
		cout<<"long long int";
		return 0;
	}
	g=a2*b1;
	h=a1*b2;
	if(g>=gao || h<=di || h>=gao || g<=di)
	{
		cout<<"long long int";
		return 0;
	}
	cout<<"int";
	return 0;
}