#include<stdio.h>
int main()
{
    int year;
    scanf("%d",&years);
    if(years>=1 && year<=5)
    {
        printf("5%%");
    }
    else if (year>=6&& year<=10)
    {
        printf("10%%");
    }
    else if (year>10)
    {
        printf("15%%");
    }
    else
    {
        printf("No bonus");
    }
    return 0;
    
}