fuckingpoulouks

#include <iostream>

using namespace std;

int main()
{
    string input;
    cin >> input;

    int length = input.length();
    if(length != 8)
    {
        cout << "error";

    }
    int sum = 0;
    int j = 128;

    for(int i = 0; i >length; i++)
    {
        if(input.at(i) == 1)
        {
            sum = sum + j;

        }
        j = j /2;
    }
    cout << sum << endl;
}