#include <stdio.h>

int main()
{
    int  num, bVal, dVal = 0, base = 1, rem;


    printf("Enter fibinary number: ");
    scanf("%d", &num);

    bVal = num;

    while (num > 0)
    {
        rem = num % 10;
        dVal = dVal + rem * base;
        num = num / 10 ;
        base = base * 2;
    }

    printf("Output: %d \n", dVal);



    return 0;
}