```cpp
#include<bits/stdc++.h>
using namespace std;
#define int long long
int a,b,c,d;
signed main(){
cin>>a>>b>>c>>d;
if(a*c<-2147483648||a*c>2147483647||b*d<-2147483648||b*d>2147483647||a*d<-2147483648||a*d>2147483647||b*c<-2147483648||b*c>2147483647){
cout<<"long long int";
}else{
cout<<"int";
}
return 0;
}
```
好好想一下判断的条件够不
by xtrxx @ 2024-09-01 18:04:36
感谢，好的
by difficultlong @ 2024-09-01 18:07:09
```cpp
#include<bits/stdc++.h>
using namespace std;
long long a[5];
const long long p=2147483647,q=-2147483648;
int main(){
for(int i=1;i<=4;i++){
scanf("%lld",&a[i]);
}
for(int i=1;i<=4;i++){
for(int j=1;j<=4;j++){
if(i==j){
continue;
}
if(a[i]*a[j]>p||a[i]*a[j]<q){
printf("long long int");
return 0;
}
}
}
printf("int");
return 0;
}
```
@[xtrxx](/user/1420512)
问一下，这为什么是错的呢
by difficultlong @ 2024-09-01 18:08:27
要是是这样呢
```
2147483647 2147483647
1 1
```
by hyl_____ @ 2024-09-01 18:12:58
@[hyl_____](/user/1035028) 感谢
by difficultlong @ 2024-09-01 18:13:44
这代码我理解不了在干什么
by xtrxx @ 2024-09-01 18:13:46
true answer：`int`
your answer：`long long int`
by hyl_____ @ 2024-09-01 18:14:04
你这个可能导致某个数的范围自乘
by hyl_____ @ 2024-09-01 18:14:40