Submission #1063480

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1063480	2024-08-17 19:15:37	avighna	Roadside Advertisements (NOI17_roadsideadverts)	C++17	100 / 100	152 ms	27392 KiB

roadsideadverts

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#include <bits/stdc++.h>
typedef long long ll;
int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(nullptr);
  ll n;
  std::cin >> n;
  std::vector<std::vector<std::pair<ll, ll>>> adj(n);
  for (ll i = 0, u, v, w; i < n - 1; ++i) {
    std::cin >> u >> v >> w;
    adj[u].push_back({v, w});
    adj[v].push_back({u, w});
  }
  std::vector<std::vector<ll>> lift(n, std::vector<ll>(16));
  std::vector<std::vector<ll>> lift_sum(n, std::vector<ll>(16));
  std::vector<ll> depth(n);
  std::function<void(ll, ll)> dfs;
  dfs = [&](ll node, ll par) {
    for (auto &[i, w] : adj[node]) {
      if (i == par) {
        continue;
      }
      lift[i][0] = node;
      lift_sum[i][0] = w;
      depth[i] = depth[node] + 1;
      dfs(i, node);
 
 
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Compilation message (stderr)

roadsideadverts.cpp: In lambda function:
roadsideadverts.cpp:66:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for (ll i = 1; i < nodes.size(); ++i) {
      |                    ~~^~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 23 / 23
• Subtask 3: 40 / 40
• Subtask 4: 30 / 30