#include <iostream> using namespace std; inline void solve() { int size; int vert; int ones = 0; cin >> size; for(int i = 0; i < size; ++i){ cin >> vert; if(vert == 1){ ++ones; } } cout << (ones >= 2 ? 0 : 2 - ones) << endl << 2 << endl << 1 << " " << 2 << endl; } int main(int argc, char **argv) { ios_base::sync_with_stdio(0); solve(); 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 | #include <iostream> using namespace std; inline void solve() { int size; int vert; int ones = 0; cin >> size; for(int i = 0; i < size; ++i){ cin >> vert; if(vert == 1){ ++ones; } } cout << (ones >= 2 ? 0 : 2 - ones) << endl << 2 << endl << 1 << " " << 2 << endl; } int main(int argc, char **argv) { ios_base::sync_with_stdio(0); solve(); return 0; } |