@[caixuhao](/user/1236011) 应该为
```cpp
#include <bits/stdc++.h>
using namespace std;
int main () {
long long n;
cin>>n;
if(n%3==0){
cout<<3<<" ";
}
if(n%5==0){
cout<<5<<" ";
}
if(n%7==0){
cout<<7<<" ";
}
if(n%3!=0){
if(n%5!=0){
if(n%7!=0){
cout<<"n";
}
}
}
return 0;
}
```
by King_and_Grey @ 2024-07-06 19:28:16
我好像知道了：
```cpp
#include <bits/stdc++.h>
using namespace std;
int main () {
int n;
cin>>n;
if(n%3==0){
cout<<3<<" ";
}
if(n%5==0){
cout<<5<<" ";
}
if(n%7==0){
cout<<7<<" ";
}
if(n%3!=0){
if(n%5!=0){
if(n%7!=0){
cout<<"n";
}
}
}
return 0;
}
```
nnn···nnnnn
by Demfoqzil_Fly @ 2024-07-06 19:30:49
```cpp
#include <bits/stdc++.h>
using namespace std;
int main(){
int a;
cin>>a;
if(a%3==0 && a%5==0 && a%7==0){
cout<<"3 5 7";
return 0;
}else if(a%3==0 && a%5==0){
cout<<"3 5";
return 0;
}else if(a%3==0 && a%7==0){
cout<<"3 7";
return 0;
}else if(a%7==0 && a%5==0){
cout<<"5 7";
return 0;
}else if(a%5==0){
cout<<"5";
return 0;
}else if(a%7==0){
cout<<"7";
return 0;
}else if(a%3==0){
cout<<"3";
return 0;
}else{
cout<<"n";
}
return 0;
}
```
by J_X_R_Y @ 2024-07-28 11:47:15