题解 | 小红的排列构造①
小红的排列构造①
https://www.nowcoder.com/practice/2b0a9318cc0740d1a78eec06162e7bea
#include <iostream>
using namespace std;
int main() {
int n;cin>>n;
if(n<=2) cout<<-1;
else
{
for(int i=1;i<=n;i++)
{
if(i==1) cout<<3<<" ";
else if(i==3) cout<<1<<" ";
else cout<<i<<" ";
}
};
}
// 64 位输出请用 printf("%lld")