#include<iostream> using namespace std; int main(){ int n, j = 0, t; ios_base::sync_with_stdio(0); cin.tie(0); cin >> n; for(int i = 0;i < n;i++){ cin >> t; if(t == 1) j++; } cout << max(0, 2 - j) << "\n2\n1 2\n"; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | #include<iostream> using namespace std; int main(){ int n, j = 0, t; ios_base::sync_with_stdio(0); cin.tie(0); cin >> n; for(int i = 0;i < n;i++){ cin >> t; if(t == 1) j++; } cout << max(0, 2 - j) << "\n2\n1 2\n"; } |