Submission #751985

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
751985	2023-06-02 03:05:40	cwza	Tracks in the Snow (BOI13_tracks)	C++17	100 / 100	1022 ms	147836 KiB

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
 
void IO(string name = "") {
  cin.tie(0)->sync_with_stdio(0);
  if (name.size()) {
    freopen((name + ".in").c_str(), "r", stdin);
    freopen((name + ".out").c_str(), "w", stdout);
  }
}
 
const int inf = 1e9+7;
vector<string> grid;
int H, W;
 
bool is_valid(int row, int col) {
    if(row>=0 && row<H && col>=0 && col<W && grid[row][col]!='.') return true;
    return false;
}
 
int main() {
    // IO("pcb");
 
    cin >> H >> W;
    grid.resize(H);
    for(int i = 0; i < H; i++) cin >> grid[i];
 
    vector<vector<int>> dist(H, vector<int>(W, inf));
 
 
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Compilation message (stderr)

tracks.cpp: In function 'void IO(std::string)':
tracks.cpp:9:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |   freopen((name + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tracks.cpp:10:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |   freopen((name + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70