oj.uz

Submission #131250

# Submission time Handle Problem Language Result Execution time Memory
131250 2019-07-16T21:22:12 Z arthurconmy Crocodile's Underground City (IOI11_crocodile) C++14
0 / 100
 5 ms 376 KB 
/* Arthur Conmy / arthurconmy */
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <cmath>
#include <algorithm>
#include <map>
#include <queue>
#include <bitset>
#include <random>
#include <stack>
#include <deque>
#include <chrono>

#ifndef ARTHUR_LOCAL
	#include "crocodile.h"
#endif

using namespace std;

#define ff first
#define ss second

const int MAXN=1001;
vector<pair<int,int>> adj[MAXN];
bool vis[MAXN];
bool leaf[MAXN];

void update(int NEW, int &FIR, int &SEC)
{
	if(NEW<=FIR)
	{
		SEC=FIR;
		FIR=NEW;
	}

	else
	{
		SEC=min(SEC,NEW);
	}
}

int dfs(int v)
{
	vis[v]=1;

	int best=int(1e9);
	int second_best=int(1e9);

	for(auto u:adj[v])
	{
		if(vis[u.ff]) continue;

		if(leaf[u.ff])
		{
			update(u.ss, best, second_best);
		}

		else
		{
			update(u.ss+dfs(u.ff), best, second_best);
		}
	}

	return second_best;
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
	for(int i=0; i<N-1; i++)
	{
		adj[R[i][0]].push_back(make_pair(R[i][1],L[i]));
		adj[R[i][1]].push_back(make_pair(R[i][0],L[i]));
	}

	for(int i=0; i<K; i++)
	{
		leaf[P[i]]=1;
	}

	int ans=0;

	for(int i=0; i<N; i++)
	{
		if(!leaf[i])
		{
			int cur=dfs(i);
			// cout << i << " " << cur << endl;
			ans=max(ans,cur);

			for(int j=0; j<N; j++)
			{
				vis[j]=0;
			}
		}
	}

	return ans;
}

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Incorrect 3 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Incorrect 3 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Incorrect 3 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -