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Submission #926823

# Submission time Handle Problem Language Result Execution time Memory
926823 2024-02-13T20:37:22 Z tomb Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 368 ms 67460 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
#define all(x) begin(x), end(x)
#define sz(x) (int) (x).size()
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
#define pb push_back
#define ins insert
#define f first 
#define s second 

int travel_plan(int N, int M, int R[][2], 
    int L[], int k, int p[]) {
    const ll INF = 1e18;
    int n = N, m = M;
    vector<vector<pii>> adj(n);
    for (int i = 0; i < m; i++) {
        int x = R[i][0], y = R[i][1],
            w = L[i];
        adj[x].pb({y, w});
        adj[y].pb({x, w});
    }
    vector<vector<ll>> dist(2, 
        vector<ll>(n, INF));
    priority_queue<pll> pq;
    for (int i = 0; i < k; i++) {
        pq.push({0, p[i]});
        dist[0][p[i]] = 0;
        dist[1][p[i]] = 0;
    }
    while (!pq.empty()) {
        auto N = pq.top(); pq.pop();
        ll u = N.s, t = -N.f;
        if (dist[1][u] != t) {
            continue;
        }
        for (auto [v, w] : adj[u]) {
            if (t + w < dist[0][v]) {
                if (dist[0][v] != dist[1][v]) {
                    pq.push({-dist[0][v], v});
                }
                swap(dist[0][v], dist[1][v]);
                dist[0][v] = t + w;
            } else if (t + w < dist[1][v]) {
                dist[1][v] = t + w;
                pq.push({-dist[1][v], v});
            }
        }
    }
    return (int) dist[1][0];
  
}

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4544 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4696 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4544 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4696 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4700 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4700 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4544 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4696 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4700 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4700 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 301 ms 57896 KB Output is correct
17 Correct 53 ms 17232 KB Output is correct
18 Correct 65 ms 18512 KB Output is correct
19 Correct 368 ms 67460 KB Output is correct
20 Correct 210 ms 47956 KB Output is correct
21 Correct 31 ms 9552 KB Output is correct
22 Correct 225 ms 46528 KB Output is correct