#include<stdio.h>
int main(){
    int year;
    scanf("%d",&year);
    if(year>1&& year<5){
        printf("5%%");
    }
    else if(year>6&&year<10){
        printf("10%%");
    }
    else if(year>10){
        printf("15%%");
    }
    else(year<1){
        printf("Invalid Input"):
    }
}