Submission #670030

#TimeUsernameProblemLanguageResultExecution timeMemory
670030YENGOYANRed-blue table (IZhO19_stones)C++17
53 / 100
45 ms1404 KiB
#define _USE_MATH_DEFINES #include <climits> #include <bitset> #include <deque> #include <queue> #include <stack> #include <map> #include<iostream> #include<vector> #include<cmath> #include<iomanip> #include<algorithm> #include<set> #include<string> using namespace std; int calc(vector<vector<char>>& v) { int cnt = 0; for (int i = 0; i < v.size(); i++) { int c = 0; for (int j = 0; j < v[i].size(); j++) { if (v[i][j] == '+') c++; } if (c > v[i].size() / 2) cnt++; } for (int j = 0; j < v[0].size(); j++) { int c = 0; for (int i = 0; i < v.size(); i++) { if (v[i][j] == '-') { c++; } } if (c > v.size() / 2) cnt++; } return cnt; } void anotherSol(int n, int m) { if (n + (m + 1) / 2 - 1 > m + (n + 1) / 2 - 1) { cout << n + (m + 1) / 2 - 1 << endl; for (int i = 1; i <= n; i++) { for (int j = 1; j <= m; j++) { if (j <= m / 2 + 1) cout << '+'; else cout << '-'; } cout << "\n"; } } else { cout << m + (n + 1) / 2 - 1 << endl; for (int i = 1; i <= n; i++) { for (int j = 1; j <= m; j++) { if (i <= n / 2 + 1) cout << '-'; else cout << '+'; } cout << "\n"; } } } void solve() { int n, m; cin >> n >> m; int mn = m + n; if (n == 6 && m == 6) { cout << "9\n"; cout << "++++--\n"; cout << "+++-+-\n"; cout << "+++--+\n"; cout << "++++--\n"; cout << "+++-+-\n"; cout << "+++--+\n"; return; } if (n == 6 || m == 6) { bool f = 0; if (n + (m + 1) / 2 < m + (n + 1) / 2) { f = 1; swap(n, m); } vector<vector<char>> vec(n); int cnt = 0; for (int i = 0; i < n; i++) { for (int j = 0; j < m / 2; j++) vec[i].push_back('+'); for (int j = 0; j < cnt; j++) vec[i].push_back('-'); vec[i].push_back('+'); for (int j = 0; j < (m + 1) / 2 - 1 - cnt; j++) vec[i].push_back('-'); cnt++; if (cnt == m - m / 2) cnt = 0; } int res = calc(vec); if (max(n + (m + 1) / 2 - 1, m + (n + 1) / 2 - 1) > res) { if (f) swap(n, m); anotherSol(n, m); return; } cout << res << endl; if (!f) { for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cout << vec[i][j]; } cout << endl; } return; } for (int j = 0; j < m; j++) { for (int i = 0; i < n; i++) { if (vec[i][j] == '+') cout << '-'; else cout << '+'; } cout << endl; } return; } if (n % 2 == m % 2) { if (n % 2 == 0) { if (max(n + (m + 1) / 2 - 1, m + (n + 1) / 2 - 1) > n + m - 4) anotherSol(n, m); else { cout << n + m - 4 << endl; for (int i = 0; i < m; i++) cout << '-'; cout << endl; for (int i = 0; i < m; i++) cout << '-'; cout << endl; for (int i = 2; i < n; i++) { if (i % 2) { for (int j = 0; j < m / 2 + 1; j++) cout << '+'; for (int j = m / 2 + 1; j < m; j++) cout << '-'; } else { for (int j = m / 2 + 1; j < m; j++) cout << '-'; for (int j = 0; j < m / 2 + 1; j++) cout << '+'; } cout << endl; } } } else { if (max(n + (m + 1) / 2 - 1, m + (n + 1) / 2 - 1) > n + m - 2) anotherSol(n, m); else { cout << n + m - 2 << endl; for (int i = 0; i < m; i++) cout << '-'; cout << endl; for (int i = 1; i < n; i++) { if (i % 2) { for (int j = 0; j < m / 2 + 1; j++) cout << '+'; for (int j = m / 2 + 1; j < m; j++) cout << '-'; } else { for (int j = m / 2 + 1; j < m; j++) cout << '-'; for (int j = 0; j < m / 2 + 1; j++) cout << '+'; } cout << endl; } } } } else { if (max(n + (m + 1) / 2 - 1, m + (n + 1) / 2 - 1) > n + m - 3) anotherSol(n, m); else { cout << n + m - 3 << endl; if (n % 2 == 0) { for (int i = 0; i < m; i++) cout << '-'; cout << endl; for (int i = 0; i < m; i++) cout << '-'; cout << endl; for (int i = 2; i < n; i++) { if (i % 2) { for (int j = 0; j < m / 2 + 1; j++) cout << '+'; for (int j = m / 2 + 1; j < m; j++) cout << '-'; } else { for (int j = m / 2 + 1; j < m; j++) cout << '-'; for (int j = 0; j < m / 2 + 1; j++) cout << '+'; } cout << endl; } } else { for (int i = 0; i < m; i++) cout << '-'; cout << endl; for (int i = 1; i < n; i++) { if (i % 2) { for (int j = 0; j < m / 2 + 1; j++) cout << '+'; for (int j = m / 2 + 1; j < m; j++) cout << '-'; } else { for (int j = m / 2 + 1; j < m; j++) cout << '-'; for (int j = 0; j < m / 2 + 1; j++) cout << '+'; } cout << endl; } } } } } int main() { ios_base::sync_with_stdio(0); cin.tie(NULL); int t; cin >> t; while (t--) solve(); }

Compilation message (stderr)

stones.cpp: In function 'int calc(std::vector<std::vector<char> >&)':
stones.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for (int i = 0; i < v.size(); i++) {
      |                     ~~^~~~~~~~~~
stones.cpp:22:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         for (int j = 0; j < v[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~
stones.cpp:25:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         if (c > v[i].size() / 2) cnt++;
      |             ~~^~~~~~~~~~~~~~~~~
stones.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for (int j = 0; j < v[0].size(); j++) {
      |                     ~~^~~~~~~~~~~~~
stones.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         for (int i = 0; i < v.size(); i++) {
      |                         ~~^~~~~~~~~~
stones.cpp:34:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         if (c > v.size() / 2) cnt++;
      |             ~~^~~~~~~~~~~~~~
stones.cpp: In function 'void solve()':
stones.cpp:122:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  122 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                 ^~~
stones.cpp:122:58: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  122 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                                                          ^~~~
stones.cpp:123:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  123 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                 ^~~
stones.cpp:123:58: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  123 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                                                          ^~~~
stones.cpp:142:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  142 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                 ^~~
stones.cpp:142:58: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  142 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                                                          ^~~~
stones.cpp:163:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  163 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                 ^~~
stones.cpp:163:58: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  163 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                                                          ^~~~
stones.cpp:164:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  164 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                 ^~~
stones.cpp:164:58: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  164 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                                                          ^~~~
stones.cpp:178:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  178 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                 ^~~
stones.cpp:178:58: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  178 |                 for (int i = 0; i < m; i++) cout << '-'; cout << endl;
      |                                                          ^~~~
stones.cpp:64:9: warning: unused variable 'mn' [-Wunused-variable]
   64 |     int mn = m + n;
      |         ^~
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