#include <stdio.h>

unsigned long remove_least (unsigned long x) {
    unsigned long least = 0xF, x1, i = 0, res = 0;

    for (x1 = x; x1; x1 >>= 4)
        if ((x1 & 0xF) < least) least = x1 & 0xF;

    for (x1 = x; x1; x1 >>= 4)
        if ((x1 & 0xF) != least) {
            res |= ((x1 & 0xF) << i);
            i += 4;
        }

    return res;
}

int main() {
    printf("%lX\n", remove_least(0x6274272));
    return 0;
}