#include<iostream>
using namespace std;
int main(){
	string s;
	cin>>s;
	int a=s.length();
	for(int i=0;i<a;i++){
		if(s[i]=='a') printf("2");
		else if(s[i]=='b') printf("22");
		else if(s[i]=='c') printf("222");
		else if(s[i]=='d') printf("3");
		else if(s[i]=='e') printf("33");
		else if(s[i]=='f') printf("333");
		else if(s[i]=='g') printf("4");
		else if(s[i]=='h') printf("44");
		else if(s[i]=='i') printf("444");
		else if(s[i]=='j') printf("5");
		else if(s[i]=='k') printf("55");
		else if(s[i]=='l') printf("555");
		else if(s[i]=='m') printf("6");
		else if(s[i]=='n') printf("66");
		else if(s[i]=='o') printf("666");
		else if(s[i]=='p') printf("7");
		else if(s[i]=='q') printf("77");
		else if(s[i]=='r') printf("777");
		else if(s[i]=='s') printf("7777");
		else if(s[i]=='t') printf("8");
		else if(s[i]=='u') printf("88");
		else if(s[i]=='v') printf("888");
		else if(s[i]=='w') printf("9");
		else if(s[i]=='x') printf("99");
		else if(s[i]=='y') printf("999");
		else if(s[i]=='z') printf("9999");
	}
	return 0;
}