Submission #856237

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
856237	2023-10-02 21:08:19	mbfibat	Dynamic Diameter (CEOI19_diameter)	C++17	49 / 100	116 ms	35528 KiB

diameter

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#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 11;
typedef pair<int, int> ii;
int n, q, w;
int a[N];
int cost[N];
ii E[N];
vector<int> adj[N], pos[N];
int top = 0;
void dfs(int u, int id_edge, int p = 0) {
  for (int id : adj[u]) {
    int x = E[id].first, y = E[id].second;
    if (x == u) swap(x, y);
    if (x == p) continue;
    a[++top] = cost[id];
    pos[id].push_back(top);
    dfs(x, id, u);
  }
  if (p) {
    a[++top] = -cost[id_edge];
    pos[id_edge].push_back(top);
  }
}
 
 
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Compilation message (stderr)

diameter.cpp: In function 'int main(int, char**)':
diameter.cpp:97:13: warning: unused variable 'c' [-Wunused-variable]
   97 |   int u, v, c;
      |             ^

• Subtask 1: 11 / 11
• Subtask 2: 13 / 13
• Subtask 3: 7 / 7
• Subtask 4: 18 / 18
• Subtask 5: 0 / 24
• Subtask 6: 0 / 27