<https://www.luogu.com.cn/problem/B3906>
B3906能AC但这个WA了7个点
by wish_light @ 2023-12-21 21:17:21
$x \times y$ 应该上下界都判一下吧。
HACK:
```
-2147483647 1
1 2147483647
```
by fcy20180201 @ 2023-12-21 21:23:33
@[wish_light](/user/1223392)
by fcy20180201 @ 2023-12-21 21:24:48
@[fcy20180201](/user/866154)
AC了谢谢
by wish_light @ 2023-12-21 21:30:54
简洁的写法 @[wish_light](/user/1223392)
```cpp
#include<bits/stdc++.h>
using namespace std;
int main(){
long long x,y,z,w;
scanf("%lld%lld%lld%lld",&x,&y,&z,&w);
long long ans=x*z,ans2=y*w,ans3=x*w,ans4=y*z;
if(ans<INT_MIN||ans2<INT_MIN||ans3<INT_MIN||ans4<INT_MIN)printf("long long ");
else if(ans>INT_MAX||ans2>INT_MAX||ans3>INT_MAX||ans4>INT_MAX)printf("long long ");
printf("int");
return 0;
}
```
by bcbgszyzh @ 2023-12-23 11:51:28