#include <iostream> using namespace std; int n,x,w; int main() { cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0); cin >> n; for (int i=0;i<n;++i) { cin >> x; if (x==1) w++; } if (w==0) cout << 2 << "\n"; else if (w==1) cout << 1 << "\n"; else cout << 0 << "\n"; cout << "2\n1 2"; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | #include <iostream> using namespace std; int n,x,w; int main() { cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0); cin >> n; for (int i=0;i<n;++i) { cin >> x; if (x==1) w++; } if (w==0) cout << 2 << "\n"; else if (w==1) cout << 1 << "\n"; else cout << 0 << "\n"; cout << "2\n1 2"; return 0; } |