简单

#include<bits/stdc++.h>
using namespace std;
//用一个字符串记录9个数的英文
string a[10]={"one","two","three","four","five","six","seven","eight","nine"};
int main(){
int n;
cin>>n;
if(n<1||n>9) cout<<"-1";
else cout<<a[n-1];
return 0;
}