#include <iostream> using namespace std; int a[101]; int main() { int n; cin >> n; for(int i = 1; i<=n; i++) cin >> a[i]; bool clear_=true; for(int i = 1; i<n; i++) if(a[i] != a[i + 1] - 1) {clear_ = false; break; } if(n == 100 && clear_ == true) { cout << "All clear!"; return 0; } for(int i = 1; i<n; i++) { if(a[i] != a[i + 1] - 1) cout << a[i] + 1 << '-'<< a[i + 1] - 1 << '\n'; } if(a[n] != 100) {cout << a[n] + 1 << '-' << "100"; } return 0; }