Submission #1151980

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1151980	2025-02-17 13:50:48	CodeLakVN	Dynamic Diameter (CEOI19_diameter)	C++20	100 / 100	2146 ms	227600 KiB

diameter

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#include <bits/stdc++.h>
using namespace std;
#define task "DIAMETER"
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FOD(i, a, b) for (int i = (a); i >= (b); i--)
#define F first
#define S second
#define ll long long
typedef pair<int, int> ii;
typedef pair<int, ll> il;
const int N = (int)1e5 + 5;
int numNode, numQuery;
ll limit;
struct EDGE {
    int u, v;
    ll w;
};
vector<il> adj[N];
EDGE edges[N];
int sz[N];
bool del[N];
vector<ii> ancestors[N]; // storing ancestors of current node: {anc, DFS time of current node}
 
 
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Compilation message (stderr)

diameter.cpp: In function 'int main()':
diameter.cpp:181:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  181 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
diameter.cpp:182:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  182 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 13 / 13
• Subtask 3: 7 / 7
• Subtask 4: 18 / 18
• Subtask 5: 24 / 24
• Subtask 6: 27 / 27