# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
349615 | 2021-01-18T03:10:06 Z | evn | Crocodile's Underground City (IOI11_crocodile) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h> #include "crocodile.h" using namespace std; #define f first #define s second #define pb push_back #define mp make_pair #define sz(a) a.size() typedef long long ll; typedef pair<int, int> pii; #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace __gnu_pbds; template<class T> using oset=tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>; ll dist[1005]; vector<pii> adj[1005]; bool isExit[1005]; ll ans = 1e18; void dfs(int u, int p){ for(pii e : adj[u]){ int v=e.f; int w = e.s; if(v == p)continue; dist[v] = dist[u] + 1LL * w; dfs(v, u); } vector<ll> children; for(pii e : adj[u]){ if(e.f != p){ children.pb(dist[e.f]); } } sort(children.begin(), children.end()); if(children.size() >= 2){ ans = min(ans, children[1]); } } int travel_plan(int N, int M, vector<vector<int>> R, vector<int> L, int K, vector<int> P){ for(int i =0; i < R.size(); i++){ adj[R[i][0]].pb({R[i][1], L[i]}); adj[R[i][1]].pb({R[i][0], L[i]}); } for(int i = 0; i < K; i++){ isExit[P[i]] = true; } dfs(0, -1); return (int)ans; } /** int main(){ ios_base::sync_with_stdio(false); cin.tie(NULL); }**/