#include<stdio.h>
struct prog{
    int num;
};
int main(int num)
{
    int ind;
    int num1,num2,num3,add;
    struct prog sum[10];
    scanf("%d",&sum[10].num);
    num1=num%10;
    num2=num1+1;
    num3=num2+1;
    add=num1+num2+num3;
    printf("%d",&sum[].add);
    return 0;
}