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#include <iostream>
using namespace std;

int calc(int n) {
	if(n == 0){
		return 1;
	}
    
    if(n < 10){
    	return n + 1;
    }
        
        
    int y = n % 10;
    int x = (n / 10) % 10;
    int xy = x * (9 - y);
    
    return (y+1) * calc(n / 10) + xy * calc(n / 100);
}

int main() {
	int n;
	cin>>n;
	cout<<calc(n);
	return 0;
}