Submission #809079

#TimeUsernameProblemLanguageResultExecution timeMemory
809079vjudge1Bitaro the Brave (JOI19_ho_t1)C++17
50 / 100
1084 ms52684 KiB
#include <bits/stdc++.h> using namespace std; int main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int h, w; cin >> h >> w; vector<vector<int>> J(h), O(h), I(w); for (int i = 0; i < h; i++) { string s; cin >> s; for (int j = 0; j < w; j++) { if (s[j] == 'J') { J[i].push_back(j); } else if (s[j] == 'O') { O[i].push_back(j); } else { I[j].push_back(i); } } } for (int i = 0; i < w; i++) { sort(I[i].begin(), I[i].end()); } long long ans = 0; for (int i = 0; i < h; i++) { for (int l = 0; l < O[i].size(); l++) { // Đổi j thành l ở đây for (int j = 0; j < J[i].size(); j++) { // Đổi l thành j ở đây if (O[i][l] > J[i][j]) { int temp = I[J[i][j]].size(); int left = 0, right = I[J[i][j]].size() - 1; while (left <= right) { int mid = left + (right - left) / 2; if (I[J[i][j]][mid] > i) { temp = mid; right = mid - 1; } else { left = mid + 1; } } ans += I[J[i][j]].size() - temp; } } } } cout << ans; return 0; }

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for (int l = 0; l < O[i].size(); l++) { // Đổi j thành l ở đây
      |                         ~~^~~~~~~~~~~~~
joi2019_ho_t1.cpp:35:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |             for (int j = 0; j < J[i].size(); j++) { // Đổi l thành j ở đây
      |                             ~~^~~~~~~~~~~~~
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