#include<bits/stdc++.h>
using namespace std;
int main() {
	char a[22][20]= {"zero","one","two","three","four","five","six", "seven","eight" ,"nine" , "ten", "eleven","twelve" , "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty",""};
	char b[5][20]= {"","twenty","thirty","forty","fifty"};
	int h,m,h1,m1;
	scanf("%d %d",&h,&m);
	if(m==0)
		printf("%s o'clock",a[h]);
	else {
		if(m<20) {
			h1=h/20;
			h=h%20;
			if(h==0)h=21;
			printf("%s %s %s",b[h1],a[h],a[m]);
		} else {
			h1=h/20;
			h=h%20;
			if(h==0)h=21;
			m1=m/10-1;
			m=m%10;
			printf("%s %s %s %s\n",b[h1],a[h],b[m1],a[m]);
		}

	}
	return 0;
}