#include<bits/stdc++.h>
using namespace std;
int a=1,b=1,c=1,f[1501]={0,1},tmp;
int main(){
	ios::sync_with_stdio(false);
	for(int i=2;i<=1500;i++){
		tmp=min(min(2*f[a],3*f[b]),5*f[c]);
		f[i]=tmp;
		if(tmp==2*f[a])
			a++;
		if(tmp==3*f[b])  
			b++;
		if(tmp==5*f[c])	
			c++;
	}
	cout<<"The 1500'th ugly number is "<<f[1500]<<"."<<endl;
	return 0;
}