Submission #1141116

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1141116	2025-01-28 07:54:08	SmuggingSpun	Furniture (JOI20_furniture)	C++20	5 / 100	301 ms	836 KiB

furniture

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#include<bits/stdc++.h>
#define taskname "A"
using namespace std;
int n, m;
namespace sub1{
  void solve(){
    vector<vector<bool>>c(n, vector<bool>(m, false));
    for(int i = 0; i < n; i++){
      for(int j = 0; j < m; j++){
        int x;
        cin >> x;
        if(x == 1){
          c[i][j] = true;
        }
      }
    }
    int q;
    cin >> q;
    for(int _ = 0; _ < q; _++){
      int x, y;
      cin >> x >> y;
      c[--x][--y] = true;
      vector<vector<bool>>vis(n, vector<bool>(m, false));
      auto dfs = [&] (auto&& self, int x, int y){
        if(x < 0 || x == n || y < 0 || y == m || vis[x][y] || c[x][y]){
          return;
        }
        vis[x][y] = true;
        self(self, x + 1, y);
        self(self, x, y + 1);
 
 
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Compilation message (stderr)

furniture.cpp: In function 'int main()':
furniture.cpp:153:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  153 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95