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Submission #367276

# Submission time Handle Problem Language Result Execution time Memory
367276 2021-02-16T18:24:10 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 int64_t INF = 1e18;
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<array<int64_t, 2>, vector<array<int64_t, 2>>, greater<array<int64_t, 2>>> pq;
	vector<array<int64_t, 2>> d(N, {INF, INF});
	for(int i = 0; i < K; i++){
		d[P[i]] = {0, 0};
		pq.push({0, int64_t(P[i])});
	}

	while(!pq.empty()){
		auto[dv, node] = pq.top();
		pq.pop();
 
		if(dv > d[node][1]) continue;

		for(auto& [v, l] : adj[node]){
			int64_t nx = dv + int64_t(l);
			if(d[v][1] < nx) 
				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][1];
}

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 -