题解 | #小乐乐排电梯#

#include <stdio.h>

int main() 
{
    int n,x,y,sum;
    scanf("%d",&n);
    x = (n+1)%12;
    y = (n+1)/12;
    if(x==0)//整除
    {
        sum = 4*y-2;
    }
    else if(x!=0)
    {
        if(y==0)//小于12人情况
        {
            sum = 2;
        }
        else 
        {
            sum = 4*y+2;
        }
    }
    printf("%d",sum);
    return 0;
}