#include <iostream>
using namespace std;

int main() {
    long long x;
    while (cin >> hex >> x)
        cout << dec << x << endl;
}

#include <cstdio>

int main(){
    unsigned long long x;

    while(scanf("%llx",&x)!=EOF){
        printf("%llu\n",x);
    }

    return 0;
}