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Submission #421204

# Submission time Handle Problem Language Result Execution time Memory
421204 2021-06-08T21:06:48 Z OttoTheDino Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 841 ms 88576 KB 
#include <bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                      for (ll i = s; i <= e; ++i)
#define rrep(i,s,e)                     for (ll i = s; i >= e; --i)
#define pb                              push_back
#define pf                              push_front
#define fi                              first
#define se                              second
typedef long long ll;
typedef pair<ll, ll> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;

int travel_plan (int n, int m, int r[][2], int l[], int k, int p[]) {
    vii neibs[n];
    rep (i,0,m-1) {
        neibs[r[i][0]].pb({r[i][1], l[i]});
        neibs[r[i][1]].pb({r[i][0], l[i]});
    }

    multiset<ll> doors[n];
    bool done[n]={};
    ll best[n] = {};
    priority_queue<ii, vii, greater<ii>> pq;

    rep (i,0,k-1) pq.push({0, p[i]});

    while (!pq.empty()) {
        ll dist = pq.top().fi, u = pq.top().se;
        pq.pop();

        if (done[u]) continue;
        if (u==0) return dist;

        for (ii vd : neibs[u]) {
            ll v = vd.fi, d = vd.se;
            if ((ll)doors[v].size()>1) {
                ll oldboi = *(++doors[v].begin());
                if (d+dist<oldboi) {
                    doors[v].insert(d+dist);
                    ll boi = *(++doors[v].begin());
                    if ((ll)doors[v].size()>1 && !done[v] && (!best[v] || boi<best[v])) {
                        pq.push({boi, v});
                        best[v] = boi;
                    }
                }
            }
            else {
                doors[v].insert(d+dist);
                ll boi = *(++doors[v].begin());
                if ((ll)doors[v].size()>1 && !done[v] && (!best[v] || boi<best[v])) {
                    pq.push({boi, v});
                    best[v] = boi;
                }
            }
        }

        done[u]=1;
    }

    assert(0==1);
    return -1;
}

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 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 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 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 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 3 ms 588 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 4 ms 844 KB Output is correct
13 Correct 4 ms 1020 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 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 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 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 3 ms 588 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 4 ms 844 KB Output is correct
13 Correct 4 ms 1020 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 741 ms 70712 KB Output is correct
17 Correct 105 ms 29908 KB Output is correct
18 Correct 127 ms 27320 KB Output is correct
19 Correct 841 ms 88576 KB Output is correct
20 Correct 322 ms 54756 KB Output is correct
21 Correct 68 ms 12612 KB Output is correct
22 Correct 420 ms 60096 KB Output is correct