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