ACM (TJU) : 3095


#include <stdio.h>
#include <math.h>

int main ()
{
    double n;
    int b;

    scanf ("%lf %d", &n, &b);

    if ( n < pow (2, b + 1) )
        printf ("yes\n");

    else
        printf ("no\n");

    return 0;
}

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