#include<stdio.h>
int main()
{
    int a,b;
    char s[10][10]={"\0","one","two","three","four","five","six","seven","eight","nine"};
    char p[10][10]={"\0","\0","twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"};
    char q[20][10]={"\0","one","two","three","four","five","six","seven","eight","nine","ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"};
    while(scanf("%d",&a)!=EOF)
    {
        if(a==0){printf("zero\n");continue;}
        if(a/1000)
        {
        printf("%s thousand",s[a/1000]);
        b=a;
        a=a-b/1000*1000;
        if(a)printf(" and ");
        }
        if(a/100)
        {
        printf("%s hundred",s[a/100]);
        b=a;
        a=a-b/100*100;
        if(a)printf(" and ");
        }
        if(a<20)printf("%s",q[a]);
        else 
        {
        if(a>=20)
        {printf("%s",p[a/10]);b=a;a=a-b/10*10;}
        if(a)printf("-%s",s[a]);
        }
        printf("\n");
    }
}