#include<iostream>
#include<fstream>
#include<string.h>
using namespace std;

string s;

int read_data()
{
fstream f;
f.open("input.dat",ios::in);
f>>s;
f.close();
}

int main()
{
read_data();
int counter=0;
while (s[counter]!='\0') { counter++; }
int result=0;
for(int i=0;i<counter;i++)
 {
   int value;
   if ((int)s[i]==48) value=0;
   if ((int)s[i]==49) value=1;
   if ((int)s[i]==50) value=2;
   result=result*10+value;
 }
cout<<result;
}