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fork download #include <iostream> using namespace std; int T, N, K, arr[105], maxRes; void updateState(int k) { int tmp = k, n = 0; while (tmp <= N) { tmp = k + (n * (k + 1)); n++; if (arr[tmp] == 0) arr[tmp] = 1; else arr[tmp] = 0; } } void backtracking(int cnt) { if (cnt == 3) { int cnt = 0; for (int i = 1; i <= N; i++) { if (arr[i] == 0) cnt++; } maxRes = maxRes > cnt ? maxRes : cnt; return; } for (int i = 1; i <= K; i++) { updateState(i); backtracking(cnt + 1); updateState(i); } } int main() { //freopen("input.txt", "r", stdin); cin >> T; for (int t = 1; t <= T; t++) { cin >> N >> K; for (int i = 1; i <= N; i++) { cin >> arr[i]; } // maxRes = -1; backtracking(0); cout << "#" << t << " " << maxRes << endl; } return 0; } Success #stdin #stdout 0.01s 5280KB comments (0) stdin 500 100 9 0 0 1 0 1 1 0 1 0 0 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 1 0 1 0 1 1 0 1 1 1 1 1 0 1 0 1 1 0 1 0 1 1 0 1 0 1 0 0 0 1 1 1 1 1 0 0 0 0 1 0 1 0 1 1 0 1 0 1 0 1 1 1 0 96 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1 1 0 0 1 1 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 1 1 40 5 1 1 1 1 0 1 0 1 1 1 0 1 0 1 0 1 1 1 0 1 0 0 1 0 0 1 0 1 0 0 0 1 0 1 1 1 0 0 0 0 78 10 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 0 0 0 1 0 1 1 0 0 0 1 1 0 1 1 0 0 1 0 0 0 1 0 0 0 1 1 0 1 1 1 1 0 0 0 1 0 1 0 1 1 1 1 1 1 1 0 1 1 1 1 0 1 0 1 0 0 90 6 0 1 0 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0 0 0 1 0 0 0 1 0 0 1 0 1 0 1 1 0 1 1 0 1 1 0 1 0 1 1 1 0 1 0 1 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 1 1 0 0 1 0 65 8 0 0 1 0 1 0 1 1 0 1 0 1 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 0 1 1 1 0 0 1 0 0 1 0 0 0 0 1 1 1 1 0 0 1 1 1 1 0 0 1 1 1 0 0 1 0 1 20 7 1 0 1 0 0 0 1 0 1 1 1 0 0 1 0 1 1 1 0 0 75 7 1 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1 1 0 0 1 0 1 0 1 0 0 0 1 0 1 1 1 1 0 0 0 0 1 1 1 0 1 0 1 0 1 0 1 0 0 1 0 0 0 1 1 1 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 0 94 10 1 1 0 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 1 0 1 1 1 1 0 0 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 1 0 1 1 1 1 0 0 0 0 1 0 1 0 1 1 0 1 0 0 1 0 0 1 1 0 0 1 1 1 0 1 1 1 0 1 1 72 6 0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 1 0 1 1 0 1 0 0 1 0 1 0 0 1 1 0 0 1 1 1 1 0 0 1 0 1 0 1 1 0 1 0 1 1 0 0 1 1 1 0 1 0 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 55 9 0 1 1 1 1 0 1 0 0 0 0 0 1 1 0 1 1 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 1 1 0 0 1 0 0 0 1 0 1 0 31 4 1 1 0 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 1 1 1 1 0 0 1 0 1 1 0 0 79 4 0 0 0 1 0 0 1 0 1 1 0 0 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0 1 1 1 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 1 1 1 0 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 1 24 3 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 1 0 1 1 0 1 0 84 7 0 0 0 1 1 0 1 0 1 0 0 1 1 1 1 1 0 0 1 0 1 1 0 0 1 1 1 1 0 1 0 0 1 1 1 0 1 1 1 1 0 1 0 0 1 0 1 0 1 1 1 0 0 0 1 0 1 0 1 1 0 1 1 0 1 1 0 stdout #1 59 https://ideone.com/K1UZQI language: C++ (gcc 8.3) created: 23 hours ago visibility: secret Share or Embed source code Discover > Sphere Engine API The brand new service which powers Ideone! Discover > IDE Widget Widget for compiling and running the source code in a web browser! Powered by Sphere Engine™ home api language faq credits desktop mobile terms of service privacy policy gdpr info Feedback & Bugs popular languages: bash pascal c perl c# php c++ python c++14 python3 haskell ruby java sqlite objective-c swift vb.net list of all supported programming languages fork download #include <iostream> using namespace std; int T, N, K, arr[105], maxRes; void updateState(int k) { int tmp = k, n = 0; while (tmp <= N) { tmp = k + (n * (k + 1)); n++; if (arr[tmp] == 0) arr[tmp] = 1; else arr[tmp] = 0; } } void backtracking(int cnt) { if (cnt == 3) { int cnt = 0; for (int i = 1; i <= N; i++) { if (arr[i] == 0) cnt++; } maxRes = maxRes > cnt ? maxRes : cnt; return; } for (int i = 1; i <= K; i++) { updateState(i); backtracking(cnt + 1); updateState(i); } } int main() { //freopen("input.txt", "r", stdin); cin >> T; for (int t = 1; t <= T; t++) { cin >> N >> K; for (int i = 1; i <= N; i++) { cin >> arr[i]; } // maxRes = -1; backtracking(0); cout << "#" << t << " " << maxRes << endl; } return 0; } Success #stdin #stdout 0.01s 5280KB comments (0) stdin 500 100 9 0 0 1 0 1 1 0 1 0 0 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 1 0 1 0 1 1 0 1 1 1 1 1 0 1 0 1 1 0 1 0 1 1 0 1 0 1 0 0 0 1 1 1 1 1 0 0 0 0 1 0 1 0 1 1 0 1 0 1 0 1 1 1 0 96 5 0 1 1 1 1 1 1 1 1 0 0 0 1 0 0 1 1 0 1 1 1 0 1 1 1 0 0 0 0 0 1 0 0 0 1 0 1 1 0 1 0 1 1 1 0 1 0 0 1 1 0 1 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 0 1 0 1 0 0 0 0 0 0 1 0 1 1 0 0 0 0 1 0 1 1 0 0 1 0 1 89 3 1 1 1 1 0 0 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 1 1 1 0 0 1 1 0 0 1 1 1 0 1 1 0 1 1 0 1 1 1 0 0 1 0 0 1 1 0 1 0 1 1 0 1 1 0 0 1 0 0 1 1 0 1 1 1 1 1 0 0 1 1 0 1 1 0 0 0 0 1 1 0 0 0 0 1 14 3 1 1 0 1 0 1 0 0 1 1 1 0 1 0 84 6 0 0 0 0 1 1 0 1 1 0 0 1 0 0 1 0 0 0 0 0 1 0 1 1 1 0 1 1 1 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 1 1 0 0 0 1 0 1 1 0 0 1 1 1 1 1 1 1 0 0 0 1 0 0 1 1 0 0 1 1 1 0 1 1 1 1 1 43 3 0 1 1 1 1 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 1 1 1 0 1 1 1 0 1 1 1 1 0 1 0 1 0 0 0 0 0 1 62 9 1 1 1 0 1 0 1 1 0 0 1 1 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0 1 0 1 0 1 0 0 0 1 0 1 1 1 1 0 0 0 0 1 1 1 0 1 0 1 0 1 0 1 0 0 1 0 0 0 1 1 1 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 0 94 10 1 1 0 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 1 0 1 1 1 1 0 0 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 1 0 1 1 1 1 0 0 0 0 1 0 1 0 1 1 0 1 0 0 1 0 0 1 1 0 0 1 1 1 0 1 1 1 0 1 1 72 6 0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 1 0 1 1 0 1 0 0 1 0 1 0 0 1 1 0 0 1 1 1 1 0 0 1 0 1 0 1 1 0 1 0 1 1 0 0 1 1 1 0 1 0 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 55 9 0 1 1 1 1 0 1 0 0 0 0 0 1 1 0 1 1 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 1 1 0 0 1 0 0 0 1 0 1 0 31 4 1 1 0 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 1 1 1 1 0 0 1 0 1 1 0 0 79 4 0 0 0 1 0 0 1 0 1 1 0 0 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0 1 1 1 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 1 1 1 0 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 1 24 3 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 1 0 1 1 0 1 0 84 7 0 0 0 1 1 0 1 0 1 0 0 1 1 1 1 1 0 0 1 0 1 1 0 0 1 1 1 1 0 1 0 0 1 1 1 0 1 1 1 1 0 1 0 0 1 0 1 0 1 1 1 0 0 0 1 0 1 0 1 1 0 1 1 0 1 1 0 stdout #1 59 https://ideone.com/K1UZQI language: C++ (gcc 8.3) created: 23 hours ago visibility: secret Share or Embed source code Discover > Sphere Engine API The brand new service which powers Ideone! Discover > IDE Widget Widget for compiling and running the source code in a web browser! Powered by Sphere Engine™ home api language faq credits desktop mobile terms of service privacy policy gdpr info Feedback & Bugs popular languages: bash pascal c perl c# php c++ python c++14 python3 haskell ruby java sqlite objective-c swift vb.net list of all supported programming languages ShareThis Copy and Paste fork download #include <iostream> using namespace std; int T, N, K, arr[105], maxRes; void updateState(int k) { int tmp = k, n = 0; while (tmp <= N) { tmp = k + (n * (k + 1)); n++; if (arr[tmp] == 0) arr[tmp] = 1; else arr[tmp] = 0; } } void backtracking(int cnt) { if (cnt == 3) { int cnt = 0; for (int i = 1; i <= N; i++) { if (arr[i] == 0) cnt++; } maxRes = maxRes > cnt ? maxRes : cnt; return; } for (int i = 1; i <= K; i++) { updateState(i); backtracking(cnt + 1); updateState(i); } } int main() { //freopen("input.txt", "r", stdin); cin >> T; for (int t = 1; t <= T; t++) { cin >> N >> K; for (int i = 1; i <= N; i++) { cin >> arr[i]; } // maxRes = -1; backtracking(0); cout << "#" << t << " " << maxRes << endl; } return 0; } Success #stdin #stdout 0.01s 5280KB comments (0) stdin 500 100 9 0 0 1 0 1 1 0 1 0 0 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 1 0 1 0 1 1 0 1 1 1 1 1 0 1 0 1 1 0 1 0 1 1 0 1 0 1 0 0 0 1 1 1 1 1 0 0 0 0 1 0 1 0 1 1 0 1 0 1 0 1 1 1 0 96 5 0 1 1 1 1 1 1 1 1 0 0 0 1 0 0 1 1 0 1 1 1 0 1 1 1 0 0 0 0 0 1 0 0 0 1 0 1 1 0 1 0 1 1 1 0 1 0 0 1 1 0 1 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 0 1 0 1 0 0 0 0 0 0 1 0 1 1 0 0 0 0 1 0 1 1 0 0 1 0 1 89 3 1 1 1 1 0 0 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 1 1 1 0 0 1 1 0 0 1 1 1 0 1 1 0 1 1 0 1 1 1 0 0 1 0 0 1 1 0 1 0 1 1 0 1 1 0 0 1 0 0 1 1 0 1 1 1 1 1 0 0 1 1 0 1 1 0 0 0 0 1 1 0 0 0 0 1 14 3 1 1 0 1 0 1 0 0 1 1 1 0 1 0 84 6 0 0 0 0 1 1 0 1 1 0 0 1 0 0 1 0 0 0 0 0 1 0 1 1 1 0 1 1 1 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 1 1 0 0 0 1 0 1 1 0 0 1 1 1 1 1 1 1 0 0 0 1 0 0 1 1 0 0 1 1 1 0 1 1 1 1 1 43 3 0 1 1 1 1 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 1 1 1 0 1 1 1 0 1 1 1 1 0 1 0 1 0 0 0 0 0 1 62 9 1 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