#include<iostream> #include<vector> using namespace std; int main() { ios_base::sync_with_stdio(false); int n,x; cin >>n; int counter=0; for(int i=0; i<n; i++) { cin >>x; if(x==1) { counter++; } } cout<<2-min(counter,2)<<"\n2\n1 2\n"; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #include<iostream> #include<vector> using namespace std; int main() { ios_base::sync_with_stdio(false); int n,x; cin >>n; int counter=0; for(int i=0; i<n; i++) { cin >>x; if(x==1) { counter++; } } cout<<2-min(counter,2)<<"\n2\n1 2\n"; return 0; } |