#include <iostream> using namespace std; int main() { int n, s = 0, i, a; cin >> n; for(i = 0; i < n; i++) { cin >> a; if(a == 1) { s++; } } if(s > 2) { s = 2; } cout << 2 - s << "\n2\n1 2\n"; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | #include <iostream> using namespace std; int main() { int n, s = 0, i, a; cin >> n; for(i = 0; i < n; i++) { cin >> a; if(a == 1) { s++; } } if(s > 2) { s = 2; } cout << 2 - s << "\n2\n1 2\n"; return 0; } |