// editor3
#include<stdio.h>
int main()
{
    int years:
    scanf("%d", &years);
    if(years<1)
    {
        printf("Invalid Input\n"):
    }
    else if(years >=1 && year <= 5)
    {
        printf("5%%\n");
    }
    else if(years >= 1 && years <= 5)
    {
        printf("10%%\n");
    }
    else if(years > 10)
    {
        printf("15%%\n");
    }
    return 0;
}