#include<stdio.h>
int main()
{
    int years;
    scanf("%d",&years);
    switch(-40<=years<=40)
    {
        case(years>=1&&years<=5):
        printf("5%%");
        break;
        case(years>=6&&years<=10):
        printf("10%%");
        break;
        case(years<0):
        printf("Invalid Input");
        break;
        default:
        printf("15%%");
        break;
    }
return 0;
}