#include<iostream> using namespace std; int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n, z = 0; cin >> n; int a[n]; for(int i = 0; i < n; i++) { cin >> a[i]; if(a[i] == 1) z++; } if(z == 0) cout << 2 << "\n"; else if(z == 1) cout << 1 << "\n"; else cout << 0 << "\n"; cout << 2 << "\n"; cout << 1 << " " << 2 << "\n"; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #include<iostream> using namespace std; int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n, z = 0; cin >> n; int a[n]; for(int i = 0; i < n; i++) { cin >> a[i]; if(a[i] == 1) z++; } if(z == 0) cout << 2 << "\n"; else if(z == 1) cout << 1 << "\n"; else cout << 0 << "\n"; cout << 2 << "\n"; cout << 1 << " " << 2 << "\n"; } |