//Daniel Grzegorzewski #include <bits/stdc++.h> #pragma GCC optimize("O3") #define MP make_pair #define PB push_back #define ST first #define ND second using namespace std; typedef pair<int, int> PII; typedef vector<int> VI; typedef vector<PII> VII; typedef long long LL; void init_ios() { ios_base::sync_with_stdio(0); cin.tie(0); } int n, x, jed; int main() { init_ios(); cin >> n; for (int i = 1; i <= n; ++i) { cin >> x; if (x == 1) ++jed; } if (jed > 1) jed = 0; else if (jed == 0) jed = 2; cout<<jed<<"\n2\n1 2\n"; }
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 33 34 35 36 37 | //Daniel Grzegorzewski #include <bits/stdc++.h> #pragma GCC optimize("O3") #define MP make_pair #define PB push_back #define ST first #define ND second using namespace std; typedef pair<int, int> PII; typedef vector<int> VI; typedef vector<PII> VII; typedef long long LL; void init_ios() { ios_base::sync_with_stdio(0); cin.tie(0); } int n, x, jed; int main() { init_ios(); cin >> n; for (int i = 1; i <= n; ++i) { cin >> x; if (x == 1) ++jed; } if (jed > 1) jed = 0; else if (jed == 0) jed = 2; cout<<jed<<"\n2\n1 2\n"; } |