#include <stdlib.h>
#include <stdio.h>
#include <limits.h>

bool f1(unsigned x) {
    return __builtin_popcount (x) == 1;
}

bool f2(unsigned x) {
    return (x-1) < (x & -x);
}


bool f3(unsigned x) {
    return  (x << __builtin_clz (x)) == INT_MIN;
}

int main(int argc, char **argv) {
    bool b = 0;
    int e = atoi(argv[1]);
    for (int i = 0; i< e; ++i) {
        b |= f1(i);
    }

    return b;
}