Submission #762079

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
762079	2023-06-20 18:07:29	gun_gan	Race (IOI11_race)	C++17	100 / 100	304 ms	67424 KiB

race

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MX = 2e5 + 5;
vector<pair<ll, ll>> g[MX];
int par[MX];
set<pair<ll, ll>> st[MX]; // (total length, num of edge)
ll sum[MX], dep[MX];
int find(int v) {
      return par[v] == v ? v : par[v] = find(par[v]);
}
ll N, K;
ll res = 1e9;
void merge(int u, int v) {
      int tu = u, tv = v;
      u = find(u), v = find(v);
      if(st[u].size() > st[v].size()) {
            swap(u, v);
      }
      par[u] = v;
      for(auto [len, e] : st[u]) {
 
 
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Compilation message (stderr)

race.cpp: In function 'void merge(int, int)':
race.cpp:22:11: warning: unused variable 'tu' [-Wunused-variable]
   22 |       int tu = u, tv = v;
      |           ^~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57