#include <stdio.h>
#include <stdlib.h>


int main()
{
   long int  p, i, c, n = 5;

    freopen("fact.in", "r", stdin);
    freopen("fact.out", "w", stdout);

    scanf("%d", &p);

    for (i = 1; i < p; i++)
    {
        n += 5;
        if (n % 25 == 0)
        {
            i++;
            c = i;
        }
    }
    if (c == p)
    {
        printf("-1 ");
    }
    else
    {
        printf("%ld ", n);
    }


    return 0;
}