Submission #1125654

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1125654	2024-12-10 08:55:54	tuannm	Grapevine (NOI22_grapevine)	C++20	0 / 100	1868 ms	84172 KiB

Main

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#include<bits/stdc++.h>
#define ii pair<int, int>
#define ll pair<long long, long long>
#define fi first
#define se second
#define pb push_back
using namespace std;
const int mod[2] = {1000000007, 998244353};
const int N = 1e5 + 1;
const string NAME = "";
int n, q;
vector<ii> adj[N];
int lg[2 * N], euler[19][2 * N], tin[N], tout[N], EulerTourTraversal;
void DFS_EulerTour(int u = 1, int p = 0){
    tin[u] = ++EulerTourTraversal;
    euler[0][EulerTourTraversal] = u;
    for(auto [v, w] : adj[u]){
        if(v == p)
            continue;
        DFS_EulerTour(v, u);
        euler[0][++EulerTourTraversal] = u;
    }
    tout[u] = EulerTourTraversal;
}
 
 
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Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:338:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  338 |         freopen((NAME + ".inp").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:339:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  339 |         freopen((NAME + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 14
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 18
• Subtask 6: 0 / 32