#include<stdio.h>
int main()
{
    
    int age;
    scanf("%d",&year);
    if(year<1){
        printf("Invalid input");
    }
    else if(year>=1&&year<=5){
        printf("5%%");

    }
    else if (year>=6&&year<=10){
        printf("10%%");
    }
    else if(year>10){
        printf("15%%");
    }
    return 0;
    }