#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include<math.h>
unsigned reverse_bits(unsigned n) {
unsigned sum = 0;
int i;
for (i = 0; i < 32; ++i) {
sum += ((n >> i) & 1)*(unsigned)pow(2, 31 - i);
}
return sum;
}
int main() {
unsigned n = 0;
scanf("%u", &n);
printf("%u\n",reverse_bits(n));
system("pause");
return 0;
}
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