cf 99B

#include<stdio.h>

int main()
{
    int n;
    scanf("%d", &n);

    int a[n], i, sum = 0;
    for(i = 0; i < n; i++)
    {
        scanf("%d", &a[i]);
        sum += a[i];
    }
    if(sum % n != 0)
    {
        printf("Unrecoverable configuration.\n");
        return 0;
    }
    sum /= n;
    int c = 0, max = 0, max_idx, min = 99999, min_idx;
    for(i = 0; i < n; i++)
    {
        if(a[i] != sum) c++;
        if(max < a[i])
        {
            max = a[i];
            max_idx = i;
        }
        if(min > a[i])
        {
            min = a[i];
            min_idx = i;
        }
    }
    if(c == 0)
    {
        printf("Exemplary pages.\n");
        return 0;
    }
    else if(c == 2)
    {
        printf("%d ml. from cup #%d to cup #%d.\n", max - sum, min_idx + 1, max_idx + 1);
    }
    else printf("Unrecoverable configuration.\n");
}