#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
int main() {
int num = 7;
int count = 0;
int i = 0;
for (i = 0; i < sizeof(int) * 8; i++) {
if (num & 1 == 1) count++;
num = num >> 1;
}
printf("%d", count);
return 0;
}