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Submission #420520

# Submission time Handle Problem Language Result Execution time Memory
420520 2021-06-08T12:16:13 Z snasibov05 Crocodile's Underground City (IOI11_crocodile) C++14
100 / 100
 996 ms 102688 KB 
#include "crocodile.h"
#include <vector>
#include <algorithm>
#include <queue>

using namespace std;

#define ll long long
#define pb push_back
#define pii pair<ll, ll>
#define f first;
#define s second;
#define oo 1000000000000000000ll

vector<vector<pii>> ed;
vector<bool> ext;
vector<int> visited;
vector<ll> res;

ll dijkstra(int n){
    vector<ll> dist1(n, oo), dist2(n, oo);
    vector<bool> visited(n);
    priority_queue<pii, vector<pii>, greater<pii>> pq;

    for (int i = 0; i < n; ++i) {
        if (ext[i]) dist1[i] = dist2[i] = 0, pq.push({0, i});
    }

    while (!pq.empty()){
        int cur = pq.top().s;
        ll d = pq.top().f;
        pq.pop();

        if (visited[cur]) continue;

        visited[cur] = true;
        for (auto [to, l] : ed[cur]){
            if (visited[to]) continue;
            dist2[to] = min(dist2[to], d + l);
            if (dist1[to] > dist2[to]) swap(dist1[to], dist2[to]);
            pq.push({dist2[to], to});
        }
    }

    return dist2[0];
}

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

    ed.resize(n);
    ext.resize(n);
    visited.resize(n);
    res.resize(n);

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

    for (int i = 0; i < k; ++i) {
        ext[p[i]] = true;
    }

    return (int)dijkstra(n);

}

Compilation message

crocodile.cpp: In function 'long long int dijkstra(int)':
crocodile.cpp:37:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   37 |         for (auto [to, l] : ed[cur]){
      |                   ^

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 480 KB Output is correct
8 Correct 1 ms 432 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 480 KB Output is correct
8 Correct 1 ms 432 KB Output is correct
9 Correct 4 ms 844 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 5 ms 1228 KB Output is correct
13 Correct 5 ms 1228 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 460 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 480 KB Output is correct
8 Correct 1 ms 432 KB Output is correct
9 Correct 4 ms 844 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 5 ms 1228 KB Output is correct
13 Correct 5 ms 1228 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 861 ms 96336 KB Output is correct
17 Correct 118 ms 20920 KB Output is correct
18 Correct 142 ms 23360 KB Output is correct
19 Correct 996 ms 102688 KB Output is correct
20 Correct 645 ms 73824 KB Output is correct
21 Correct 66 ms 9028 KB Output is correct
22 Correct 580 ms 63844 KB Output is correct