Submission #649362

#	Time	Username	Problem	Language	Result	Execution time	Memory
649362		mychecksedad	Crocodile's Underground City (IOI11_crocodile)	C++17	46 / 100	129 ms	262144 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N = 1e6;



int n, m;
vector<int> dist[N], dp(N);
vector<pair<int, int>> g[N];
bitset<N> is;

void dfs(int v, int p){
    if(is[v]){
        return;
    }
    for(auto k: g[v]){
        int u = k.first, e = k.second;
        if(u == p) continue;
        dfs(u, v);
    }
    for(auto k: g[v]){
        int u = k.first, e = k.second;
        if(u == p) continue;
        int dist = 1e9;
        for(auto k1: g[v]){
            int u1 = k1.first, e1 = k1.second;
            if(u1 == p || u1 == u) continue;
            dist = min(dist, dp[u1] + e1);
        } 
        dp[v] = max(dp[v], dist);
    }
}

int travel_plan(int F, int M, int R[][2], int L[], int K, int P[]){ 
    n = F;
    m = M;
    for(int i = 0; i < K; ++i) is[P[i]] = 1;
    for(int i = 0; i < m; ++i){
        g[R[i][0]].pb({R[i][1], L[i]});
        g[R[i][1]].pb({R[i][0], L[i]});
    }
    dfs(0, 0);

    return dp[0];
}

Compilation message (stderr)

crocodile.cpp: In function 'void dfs(int, int)':
crocodile.cpp:19:26: warning: unused variable 'e' [-Wunused-variable]
   19 |         int u = k.first, e = k.second;
      |                          ^
crocodile.cpp:24:26: warning: unused variable 'e' [-Wunused-variable]
   24 |         int u = k.first, e = k.second;
      |                          ^

• Subtask 1: 46 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11