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Submission #898805

# Submission time Handle Problem Language Result Execution time Memory
898805 2024-01-05T06:36:36 Z Samot19 Crocodile's Underground City (IOI11_crocodile) C++14
0 / 100
 2 ms 4544 KB 
#include <iostream>
#include <queue>
#include <vector>
#include <functional>
#include <utility>
#include <climits>

using namespace std;

priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;

int xd, b, w;

bool vis[100005];

pair<int, int> dist[100005];

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[]) {

    vector<vector<pair<int, int>>> g(n);

    for(int i=0; i<n; i++) {
        dist[i] = {1000000001, 1000000001};
    }

    for(int i=0; i<m; i++) {
        g[r[i][0]].push_back({r[i][1], l[i]});
        g[r[i][1]].push_back({r[i][0], l[i]});
    }

    for(int i=0; i<k; i++) {
        dist[p[i]] = {0, 0};
        pq.push({0, p[i]});
    }

    while(!pq.empty()) {
        xd = pq.top().second;
        pq.pop();

        if(vis[xd]) continue;

        vis[xd] = true;

        for(auto z : g[xd]) {
            b = z.first;
            w = z.second;

            if(dist[b].first > dist[b].second) {
                swap(dist[b].first, dist[b].second);
            }

            if(max(dist[xd].first, dist[xd].second)+w < dist[b].second) {
                dist[b].second = min(max(dist[xd].first, dist[xd].second)+w, 1000000001);
                if(dist[b].second < 1000000001) {
                    pq.push({dist[b].second, b});
                }
            }
        }
    }

    return max(dist[0].first, dist[0].second);
}

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4544 KB Output is correct
2 Incorrect 2 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4544 KB Output is correct
2 Incorrect 2 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4544 KB Output is correct
2 Incorrect 2 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -