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Submission #367268

# Submission time Handle Problem Language Result Execution time Memory
367268 2021-02-16T18:13:46 Z wind_reaper Crocodile's Underground City (IOI11_crocodile) C++17
0 / 100
 1 ms 364 KB 
#include <bits/stdc++.h>
#include "crocodile.h"

using namespace std;

const int INF = 1e9 + 1;
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
	vector<vector<pair<int, int>>> adj(N);
	for(int i = 0; i < M; i++){
		adj[R[i][0]].push_back({R[i][1], L[i]});
		adj[R[i][1]].push_back({R[i][0], L[i]});
	}

	priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
	vector<array<int, 2>> d(N, {INF, INF});
	for(int i = 0; i < K; i++){
		d[P[i]] = {0, 0};
		pq.push({0, P[i]});
	}

	while(!pq.empty()){
		auto[dv, node] = pq.top();
		pq.pop();

		if(dv > d[node][1]) continue;
		for(auto& [v, l] : adj[node]){
			int nx = dv + l;
			if(nx >= d[v][1]) continue;
			d[v][1] = nx;
			if(d[v][1] < d[v][0]) swap(d[v][1], d[v][0]);
			pq.push({nx, v});
		}
	}

	return (d[0][0] == INF ? -1 : d[0][0]);
}

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -