Submission #1221598

#TimeUsernameProblemLanguageResultExecution timeMemory
1221598khomeT-Covering (eJOI19_covering)C++20
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define intl long long void solve(){ int n, m; cin >> n >> m; vector<vector<int>> els(n, vector<int>(m)); for (int i = 0; i < n; i++){ for (int j = 0; j < m; j++){ cin >> els[i][j]; } } int k; cin >> k; vector<pair<int, int>> xs(k); for (int i = 0; i < k; i ++){ int x, y; cin >> x >> y; xs[i] = {x, y}; } sort(xs.begin(), xs.end()); bool so = true; vector<set<pair<int, int>>> components; for (auto& pr : xs){ int x = pr.first, y = pr.second; bool est = false; for (set<pair<int, int>> &st : components){ if (st.find({x-1, y-1}) != st.end()) est = true; else if (st.find({x+1, y+1}) != st.end()) est = true; else if (st.find({x-1, y}) != st.end()) est = true; else if (st.find({x, y-1}) != st.end()) est = true; else if (st.find({x+1, y}) != st.end()) est = true; else if (st.find({x, y+1}) != st.end()) est = true; else if (st.find({x, y+2}) != st.end()) est = true; else if (st.find({x, y-2}) != st.end()) est = true; else if (st.find({x+2, y}) != st.end()) est = true; else if (st.find({x-2, y}) != st.end()) est = true; if (est) { st.insert({x, y}); break; } } if (!est) { components.push_back({{x, y}}); } } int ans = 0; for (auto smth : components){ set<vector<int>> sosedi; int cnt = 0; for (pair<int, int> pr : smth) { int x = pr.first, y = pr.second; cnt += els[x][y]; if (x-1 >= 0 && sosedi.find({els[x-1][y], x-1, y}) == sosedi.end()) { sosedi.insert({els[x-1][y], x-1, y}); cnt += els[x-1][y]; } if (x+1 < n && sosedi.find({els[x+1][y], x+1, y}) == sosedi.end()) { sosedi.insert({els[x+1][y], x+1, y}); cnt += els[x+1][y]; } if (y-1 >= 0 && sosedi.find({els[x][y-1], x, y-1}) == sosedi.end()) { sosedi.insert({els[x][y-1], x, y-1}); cnt += els[x][y-1]; } if (y+1 < m && sosedi.find({els[x][y+1], x, y+1}) == sosedi.end()) { sosedi.insert({els[x][y+1], x, y+1}); cnt += els[x][y+1]; } } if (sosedi.size() < 3*smth.size()) {cout << "No" << endl; return;} if (sosedi.size() == 3*smth.size()) ans += cnt; if (sosedi.size() == 3*smth.size() + 1) ans += cnt - (*sosedi.begin())[0]; } cout << ans << endl; // cout << "YYAY" << endl; } signed freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); int t = 1; // cin >> t; while (t--)solve(); }

Compilation message (stderr)

covering.cpp:101:18: error: 'int freopen' redeclared as different kind of entity
  101 | signed    freopen("input.txt", "r", stdin);
      |                  ^
In file included from /usr/include/c++/11/cstdio:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:46,
                 from covering.cpp:1:
/usr/include/stdio.h:265:14: note: previous declaration 'FILE* freopen(const char*, const char*, FILE*)'
  265 | extern FILE *freopen (const char *__restrict __filename,
      |              ^~~~~~~
covering.cpp:102:12: error: expected constructor, destructor, or type conversion before '(' token
  102 |     freopen("output.txt", "w", stdout);
      |            ^
covering.cpp:105:5: error: expected unqualified-id before 'while'
  105 |     while (t--)solve();
      |     ^~~~~
covering.cpp:106:1: error: expected declaration before '}' token
  106 | }
      | ^