Submission #59935

#	Time	Username	Problem	Language	Result	Execution time	Memory
59935		theknife2001	Crocodile's Underground City (IOI11_crocodile)	C++17	46 / 100	1038 ms	263168 KiB

crocodile

#include <bits/stdc++.h>
#include "crocodile.h"
#define ii pair < int , int >
#define fi first
#define se second


using namespace std;
vector < ii > vec[1005];
long long dp[1005];


void dfs(int u , int p)
{
    long long mn1,mn2;
    mn1=mn2=1e9+7;
    int v,c;
    for(auto x:vec[u])
    {
        v=x.fi;
        c=x.se;
        if(v==p)
            continue ;
        dfs(v,u);
        if(mn2>dp[v]+c)
            mn2=dp[v]+c;
        if(mn1>mn2)
            swap(mn1,mn2);
    }
    dp[u]=mn2;
    if(vec[u].size()==1)
        dp[u]=0;
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    for(int i=0;i<M;i++)
    {
        vec[R[i][1]].push_back({R[i][0],L[i]});
        vec[R[i][0]].push_back({R[i][1],L[i]});
    }
    dfs(0,0);
    return dp[0];
}

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