oj.uz

Submission #305712

# Submission time Handle Problem Language Result Execution time Memory
305712 2020-09-23T20:50:45 Z peti1234 Stations (IOI20_stations) C++17
100 / 100
 1154 ms 1232 KB 
#include <bits/stdc++.h>
#include "stations.h"
using namespace std;
const int c=1002;
vector<int> sz[c], sol;
bool v[c];
int cnt;
void dfs(int a, bool b) {
    v[a]=1;
    if (!b) sol[a]=cnt++;
    for (int i=0; i<sz[a].size(); i++) {
        int x=sz[a][i];
        if (!v[x]) dfs(x, !b);
    }
    if (b) sol[a]=cnt++;
}
vector<int> label(int n, int k, vector<int> x, vector<int> y) {
    for (int i=0; i<n; i++) sz[i].clear(), v[i]=0, cnt=0, sol.clear();
    sol.resize(n);
    for (int i=0; i<n-1; i++) sz[x[i]].push_back(y[i]), sz[y[i]].push_back(x[i]);
    dfs(0, 0);
    return sol;
}
int find_next_station(int s, int t, vector<int> sz) {
    int x=sz[0], y=sz.back(), si=sz.size();
    if (s<x) {
        if (t<s || t>y) return y;
        for (int i=0; i<si; i++) if (sz[i]>=t) return sz[i];
    }
    if (t>s || t<x) return x;
    for (int i=si-1; i>0; i--) if (sz[i]<=t) return sz[i];
}

Compilation message

stations.cpp: In function 'void dfs(int, bool)':
stations.cpp:11:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for (int i=0; i<sz[a].size(); i++) {
      |                   ~^~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
   32 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 554 ms 1024 KB Output is correct
2 Correct 586 ms 768 KB Output is correct
3 Correct 1154 ms 872 KB Output is correct
4 Correct 745 ms 672 KB Output is correct
5 Correct 713 ms 856 KB Output is correct
6 Correct 558 ms 768 KB Output is correct
7 Correct 564 ms 768 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 5 ms 768 KB Output is correct
10 Correct 2 ms 768 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 488 ms 812 KB Output is correct
2 Correct 530 ms 824 KB Output is correct
3 Correct 1061 ms 768 KB Output is correct
4 Correct 682 ms 768 KB Output is correct
5 Correct 631 ms 768 KB Output is correct
6 Correct 466 ms 824 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 552 ms 768 KB Output is correct
2 Correct 448 ms 776 KB Output is correct
3 Correct 922 ms 768 KB Output is correct
4 Correct 802 ms 1068 KB Output is correct
5 Correct 668 ms 876 KB Output is correct
6 Correct 446 ms 768 KB Output is correct
7 Correct 494 ms 768 KB Output is correct
8 Correct 2 ms 768 KB Output is correct
9 Correct 5 ms 1024 KB Output is correct
10 Correct 1 ms 876 KB Output is correct
11 Correct 754 ms 768 KB Output is correct
12 Correct 544 ms 772 KB Output is correct
13 Correct 499 ms 776 KB Output is correct
14 Correct 519 ms 824 KB Output is correct
15 Correct 51 ms 864 KB Output is correct
16 Correct 64 ms 836 KB Output is correct
17 Correct 113 ms 816 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 971 ms 1008 KB Output is correct
2 Correct 726 ms 1024 KB Output is correct
3 Correct 647 ms 884 KB Output is correct
4 Correct 3 ms 880 KB Output is correct
5 Correct 4 ms 872 KB Output is correct
6 Correct 1 ms 876 KB Output is correct
7 Correct 800 ms 768 KB Output is correct
8 Correct 905 ms 768 KB Output is correct
9 Correct 660 ms 876 KB Output is correct
10 Correct 572 ms 768 KB Output is correct
11 Correct 5 ms 872 KB Output is correct
12 Correct 6 ms 1132 KB Output is correct
13 Correct 4 ms 888 KB Output is correct
14 Correct 4 ms 1004 KB Output is correct
15 Correct 2 ms 888 KB Output is correct
16 Correct 479 ms 880 KB Output is correct
17 Correct 578 ms 768 KB Output is correct
18 Correct 582 ms 768 KB Output is correct
19 Correct 572 ms 768 KB Output is correct
20 Correct 543 ms 768 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 578 ms 1232 KB Output is correct
2 Correct 466 ms 768 KB Output is correct
3 Correct 905 ms 1024 KB Output is correct
4 Correct 797 ms 876 KB Output is correct
5 Correct 685 ms 880 KB Output is correct
6 Correct 435 ms 776 KB Output is correct
7 Correct 471 ms 768 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 4 ms 876 KB Output is correct
10 Correct 1 ms 876 KB Output is correct
11 Correct 496 ms 768 KB Output is correct
12 Correct 520 ms 768 KB Output is correct
13 Correct 891 ms 768 KB Output is correct
14 Correct 687 ms 768 KB Output is correct
15 Correct 574 ms 768 KB Output is correct
16 Correct 450 ms 832 KB Output is correct
17 Correct 697 ms 768 KB Output is correct
18 Correct 478 ms 912 KB Output is correct
19 Correct 521 ms 1140 KB Output is correct
20 Correct 435 ms 832 KB Output is correct
21 Correct 61 ms 768 KB Output is correct
22 Correct 93 ms 844 KB Output is correct
23 Correct 100 ms 808 KB Output is correct
24 Correct 7 ms 884 KB Output is correct
25 Correct 6 ms 768 KB Output is correct
26 Correct 5 ms 880 KB Output is correct
27 Correct 4 ms 876 KB Output is correct
28 Correct 1 ms 768 KB Output is correct
29 Correct 519 ms 880 KB Output is correct
30 Correct 517 ms 888 KB Output is correct
31 Correct 563 ms 872 KB Output is correct
32 Correct 475 ms 1024 KB Output is correct
33 Correct 513 ms 1012 KB Output is correct
34 Correct 347 ms 908 KB Output is correct
35 Correct 500 ms 1008 KB Output is correct
36 Correct 540 ms 888 KB Output is correct
37 Correct 554 ms 888 KB Output is correct
38 Correct 494 ms 780 KB Output is correct
39 Correct 513 ms 784 KB Output is correct
40 Correct 434 ms 784 KB Output is correct
41 Correct 510 ms 908 KB Output is correct
42 Correct 71 ms 828 KB Output is correct
43 Correct 137 ms 768 KB Output is correct
44 Correct 160 ms 796 KB Output is correct
45 Correct 207 ms 768 KB Output is correct
46 Correct 333 ms 904 KB Output is correct
47 Correct 398 ms 796 KB Output is correct
48 Correct 81 ms 796 KB Output is correct
49 Correct 77 ms 1024 KB Output is correct