#include<stdio.h>
int add(int a ,int b )//用位运算实现两个数相加
{
    int cf=a&b;
    int sum=a^b;
    while (cf)
    {
        a=sum;
        b=cf<<1;
        cf=a&b;
        sum=a^b;
    }
    return sum;                                                                 
}
int main()
{
    int x,y;
    scanf("%d",&x);
    y=x<<3;
    y=add(x,y);
    printf("%d",y);
}