#include<stdio.h>
int main(){
    int years;
    scanf("%d",&years);
    if(1<=years && y<=5)
    printf("5%%");
    else if(6<=years && years<=10)
    printf("10%%");
    else if(years>10 && years<=40)
    printf("15%%");
    else if (years<1)
    printf("Invalid Input");
    return 0;
}