#include <bits/stdc++.h> using namespace std; int n, x, cnt; int main() { ios_base::sync_with_stdio(0); cin >> n; for(int i = 1; i <= n; i++) { cin >> x; if(x == 1) cnt++; } if(cnt > 2) cout << "0\n2\n1 2\n"; else if(cnt == 1) cout << "1\n2\n1 2\n"; else cout << "2\n2\n1 2\n"; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | #include <bits/stdc++.h> using namespace std; int n, x, cnt; int main() { ios_base::sync_with_stdio(0); cin >> n; for(int i = 1; i <= n; i++) { cin >> x; if(x == 1) cnt++; } if(cnt > 2) cout << "0\n2\n1 2\n"; else if(cnt == 1) cout << "1\n2\n1 2\n"; else cout << "2\n2\n1 2\n"; } |