#include <iostream> using namespace std; int main() { ios_base::sync_with_stdio(0); int ones = 0, d, n; cin >> n; for (int i = 0; i < n; i++) { cin >> d; if (d == 1) ones++; } if (ones > 2) ones = 2; cout << 2 - ones << endl; cout << 2 << endl; cout << 1 << ' ' << 2 << endl; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | #include <iostream> using namespace std; int main() { ios_base::sync_with_stdio(0); int ones = 0, d, n; cin >> n; for (int i = 0; i < n; i++) { cin >> d; if (d == 1) ones++; } if (ones > 2) ones = 2; cout << 2 - ones << endl; cout << 2 << endl; cout << 1 << ' ' << 2 << endl; } |