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