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Submission #362046

# Submission time Handle Problem Language Result Execution time Memory
362046 2021-02-01T16:13:55 Z valerikk Stations (IOI20_stations) C++17
76 / 100
 1325 ms 1528 KB 
#include <bits/stdc++.h>
using namespace std; 

const int N = 1007;
vector<int> g[N];
int a[N], b[N], C, dep[N];

void dfs(int v,int d = 0, int p =-1){
    a[v] = C++;
    dep[v] = d;
    for(int u : g[v]){
        if (u!= p) {
            dfs(u, d + 1, v);
        }
    }
    b[v] = C++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    for (int i = 0;i < n; i++) g[i].clear();
    for (int i = 0;i < n - 1; i++) {
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
    }
    C = 0;
    dfs(0);
    vector<int> L(n);
    for(int i =0 ; i < n ; i++) L[i] = (dep[i]&1) ? b[i] : a[i];
    return L;
}

int find_next_station(int s, int t, vector<int> c) {
    for (int v : c) {
        if (v == t) return v;
    }
    bool f = 1;
    for (int v : c) f &= v > s;
    if (f) {
        int lst = s;
        for (int i = 0; i < c.size(); i++) {
            if (i == (int)c.size() - 1) return c[i];
            if (t > lst && t < c[i]) return c[i];
            lst = c[i];
        }
        assert(0);
        return -1;
    }
    int lst = s;
    for (int i = (int)c.size() - 1; i >= 0; i--){
        if (i == 0) return c[i];
        if (t < lst && t > c[i]) return c[i];
        lst = c[i];
    }
    assert(0);
    return -1;
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:40:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         for (int i = 0; i < c.size(); i++) {
      |                         ~~^~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 492 KB Invalid labels (values out of range). scenario=2, k=1000, vertex=1, label=1990
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 364 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=1022
2 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 572 ms 864 KB Output is correct
2 Correct 493 ms 992 KB Output is correct
3 Correct 1059 ms 736 KB Output is correct
4 Correct 814 ms 864 KB Output is correct
5 Correct 790 ms 884 KB Output is correct
6 Correct 504 ms 992 KB Output is correct
7 Correct 527 ms 1100 KB Output is correct
8 Correct 3 ms 940 KB Output is correct
9 Correct 5 ms 736 KB Output is correct
10 Correct 2 ms 940 KB Output is correct
11 Correct 615 ms 1068 KB Output is correct
12 Correct 510 ms 1248 KB Output is correct
13 Correct 528 ms 1000 KB Output is correct
14 Correct 523 ms 864 KB Output is correct
15 Correct 52 ms 736 KB Output is correct
16 Correct 94 ms 864 KB Output is correct
17 Correct 130 ms 852 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 923 ms 808 KB Output is correct
2 Correct 760 ms 736 KB Output is correct
3 Correct 716 ms 864 KB Output is correct
4 Correct 3 ms 864 KB Output is correct
5 Correct 5 ms 776 KB Output is correct
6 Correct 2 ms 736 KB Output is correct
7 Correct 677 ms 736 KB Output is correct
8 Correct 1325 ms 864 KB Output is correct
9 Correct 754 ms 864 KB Output is correct
10 Correct 668 ms 864 KB Output is correct
11 Correct 6 ms 940 KB Output is correct
12 Correct 6 ms 940 KB Output is correct
13 Correct 5 ms 736 KB Output is correct
14 Correct 4 ms 736 KB Output is correct
15 Correct 2 ms 864 KB Output is correct
16 Correct 630 ms 736 KB Output is correct
17 Correct 533 ms 940 KB Output is correct
18 Correct 614 ms 864 KB Output is correct
19 Correct 557 ms 864 KB Output is correct
20 Correct 686 ms 864 KB Output is correct

Subtask #5
50.0 / 61.0

# Verdict Execution time Memory Grader output
1 Partially correct 599 ms 1148 KB Partially correct
2 Partially correct 621 ms 992 KB Partially correct
3 Correct 923 ms 864 KB Output is correct
4 Correct 748 ms 864 KB Output is correct
5 Correct 632 ms 896 KB Output is correct
6 Partially correct 546 ms 864 KB Partially correct
7 Partially correct 511 ms 864 KB Partially correct
8 Correct 3 ms 812 KB Output is correct
9 Correct 5 ms 864 KB Output is correct
10 Correct 1 ms 736 KB Output is correct
11 Partially correct 608 ms 864 KB Partially correct
12 Partially correct 729 ms 820 KB Partially correct
13 Correct 999 ms 896 KB Output is correct
14 Correct 770 ms 940 KB Output is correct
15 Correct 753 ms 864 KB Output is correct
16 Partially correct 502 ms 864 KB Partially correct
17 Correct 728 ms 992 KB Output is correct
18 Partially correct 496 ms 1092 KB Partially correct
19 Partially correct 573 ms 860 KB Partially correct
20 Partially correct 440 ms 736 KB Partially correct
21 Correct 61 ms 992 KB Output is correct
22 Partially correct 78 ms 864 KB Partially correct
23 Partially correct 141 ms 984 KB Partially correct
24 Correct 7 ms 940 KB Output is correct
25 Correct 7 ms 940 KB Output is correct
26 Correct 5 ms 864 KB Output is correct
27 Correct 5 ms 736 KB Output is correct
28 Correct 2 ms 940 KB Output is correct
29 Correct 519 ms 736 KB Output is correct
30 Correct 625 ms 864 KB Output is correct
31 Correct 470 ms 940 KB Output is correct
32 Correct 551 ms 864 KB Output is correct
33 Correct 514 ms 940 KB Output is correct
34 Partially correct 317 ms 1008 KB Partially correct
35 Partially correct 589 ms 1068 KB Partially correct
36 Partially correct 519 ms 864 KB Partially correct
37 Partially correct 525 ms 1204 KB Partially correct
38 Partially correct 505 ms 1108 KB Partially correct
39 Partially correct 534 ms 1112 KB Partially correct
40 Partially correct 505 ms 1528 KB Partially correct
41 Partially correct 482 ms 1100 KB Partially correct
42 Partially correct 82 ms 896 KB Partially correct
43 Partially correct 93 ms 864 KB Partially correct
44 Partially correct 126 ms 992 KB Partially correct
45 Partially correct 176 ms 992 KB Partially correct
46 Partially correct 324 ms 864 KB Partially correct
47 Partially correct 391 ms 932 KB Partially correct
48 Partially correct 83 ms 1100 KB Partially correct
49 Partially correct 63 ms 1112 KB Partially correct