#include <iostream>
#include <cmath>
using namespace std;

int na10(string dana) {
    int pom = 0;
    int dl = dana.length();
    for (int i = 0; i < dl; i++){
        int x = int(dana[dl-i-1]) - 48;
        pom = pom + x * pow(8, i);
        }
        return pom;
}

int main() {
    cout << na10("174") << endl;
    cout << na10("362373") << endl;
    return 0;
}