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