#include <iostream>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int x, y, n;
    cin >> n >> x;
    bool printed = 0;

    if (x != 1) {
        printed = 1;
        cout << "1-" << x - 1 << '\n';
    }

    for (int i = 2; i <= n; ++i) {
        cin >> y;
        if (y - x > 1) {
            cout << x + 1 << '-' << y - 1 << '\n';
            printed = 1;
        }
        x = y;
    }

    if (y != 100)
        cout << y + 1 << "-100";

    if (printed == 0)
        cout << "All clear!";
    cout << '\n';
    return 0;
}