云和云

int lowestOne(int N)
{
    int Ret = 0;
    while(N)
   {
        N >>= 1;
        Ret += N;
    }
    return Ret;
}

#include <stdio.h>
#define INT_LENGTH (32)
int main(void){
	unsigned int n;
	int count = 0;
	scanf("%u", n);
	while(n){
		n <<= 1;
		count++;
	}
	printf("last 1 position = %d\n", INT_LENGTH - count);
	return 0;
}