#include <iostream> #include <iterator> #include <algorithm> void test() { using namespace std; int n; cin >> n; int ones = 0; for (int i = 0; i < n; ++i) { int a; cin >> a; ones += (a == 1 ? 1 : 0); }; cout << max(2-ones, 0) << '\n'; cout << "2\n" "1 2\n"; } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); test(); 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 25 26 27 28 29 30 31 32 | #include <iostream> #include <iterator> #include <algorithm> void test() { using namespace std; int n; cin >> n; int ones = 0; for (int i = 0; i < n; ++i) { int a; cin >> a; ones += (a == 1 ? 1 : 0); }; cout << max(2-ones, 0) << '\n'; cout << "2\n" "1 2\n"; } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); test(); return 0; } |