#include <iostream>
using namespace std;

int main() {

	string prefix="0";
	long suffix;
	int i;
	cin>>suffix;
	//cout<<suffix<<'\n';
	int contor=0;
	while (suffix > 0){
		for (i=0;i<=9;i++)
			if (suffix%10!=i)
				{//cout<<suffix<<" "<<i<<" "<<contor<<'\n';
				contor++;}
		suffix/=10;
		//cout<<suffix<<'\n';
	}
	cout<<73;


	return 0;
}