#include<bits/stdc++.h>
using namespace std;
string number[25]={" zero "," one "," two "," three "," four "," five "," six "," seven "," eight "," nine "," ten "," eleven "," twelve "," thirteen "," fourteen "," fifteen "," sixteen "," seventeen "," eighteen "," nineteen "," twenty "};
int main(){
	string a;
	int n[10],te=0,ans=0;
	getline(cin,a);
	a=' '+a;
	for(int i=0;i<a.length();i++){
		if(a[i]>='A'&&a[i]<='Z'){
			a[i]=tolower(a[i]);
		}
	}
	for(int i=0;i<=20;i++){
		int p=0;
		while(a.find(number[i],p)!=-1){
			n[te]=(i*i)%100;te++;
			p=a.find(number[i],p)+1;
		}
	}
	if(te==0){
		cout<<0;
		return 0;
	}
	sort(n,n+te);
	int flag=0;
	for(int i=0;i<te;i++){
		if(flag==1&&!n[i])continue; else if(flag==1&&n[i])flag=0;
		if(!n[i]&&i==0){
			flag=1;
			continue;
		}
		cout<<n[i];
	}
	return 0;
}