@[Yuanyiyang2011](/user/920741) x，y可以取负值
by _int123_ @ 2023-12-18 16:13:01
四个值交叉相乘都需要看
正解为8个分支
```cpp
#include <bits/stdc++.h>
using namespace std;
const long long m1 = 2147483647;
const long long m2 = -2147483648;
long long xl,xr,yl,yr;
int main(){
scanf("%lld%lld%lld%lld",&xl,&xr,&yl,&yr);
if (xl * yl > m1 || xl * yl < m2 || xr * yr > m1 || xr * yr < m2 || xl * yr > m1 || xl * yr < m2 || xr * yl > m1 || xr * yl < m2) printf("long long int");
else printf("int");
return 0;
}
```
by liuruiqing @ 2023-12-18 16:55:38
@[Yuanyiyang2011](/user/920741)
by Mike6024 @ 2023-12-22 16:45:09
@[Yuanyiyang2011](/user/920741) 
by Su_chang2014 @ 2023-12-22 17:39:00
@[Yuanyiyang2011](/user/920741)
```cpp
#include<bits/stdc++.h>
using namespace std;
signed main()
{
float xl,xu,yl,yu;
cin>>xl>>xu;
cin>>yl>>yu;
(xu*yu>2147483647||xu*yl<-2147483648||xl*yu<-2147483648||xl*yl>2147483648)
?cout<<"long long int":cout<<"int";
return 0;
}
``````
by Su_chang2014 @ 2023-12-22 17:47:06
@[Yuanyiyang2011](/user/920741) 我过了
by Su_chang2014 @ 2023-12-22 17:48:12
感谢大佬们
by Yuanyiyang2011 @ 2023-12-25 15:29:53