oj.uz

Submission #309929

# Submission time Handle Problem Language Result Execution time Memory
309929 2020-10-05T02:18:34 Z tjdgus4384 Stations (IOI20_stations) C++14
100 / 100
 1057 ms 1272 KB 
#include<bits/stdc++.h>
#include "stations.h"
using namespace std;
vector<int> path[1001], ret;
bool visited[1001];
int tsize[1001];

int dfs(int x){
    int s = 1;
    for(int i = 0;i < path[x].size();i++){
        if(visited[path[x][i]]) continue;
        visited[path[x][i]] = true;
        s += dfs(path[x][i]);
    }
    return tsize[x] = s;
}
void dfs2(int x, int s, int e, int d){
    if(d%2 == 0) {ret[x] = s; s++;}
    else ret[x] = e;
    for(int i = 0;i < path[x].size();i++){
        if(visited[path[x][i]]) continue;
        visited[path[x][i]] = true;
        dfs2(path[x][i], s, s+tsize[path[x][i]]-1, d+1);
        s+=tsize[path[x][i]];
    }
}

vector<int> label(int n, int k, vector<int> u, vector<int> v){
    ret.clear();
    for(int i = 0;i < n;i++) path[i].clear();
    ret.resize(n);
    for(int i = 0;i < n-1;i++){
        path[u[i]].push_back(v[i]);
        path[v[i]].push_back(u[i]);
    }
    for(int i = 0;i < n;i++) visited[i] = false;
    visited[0] = true;
    dfs(0);
    for(int i = 0;i < n;i++) visited[i] = false;
    visited[0] = true;
    dfs2(0, 0, n-1, 0);
    return ret;
}

int find_next_station(int s, int t, vector<int> c){
    if(c[0] < s){
        if(t > s || t < c[0]) return c[0];
        return c[(int)(upper_bound(c.begin(), c.end(), t) - c.begin()) - 1];
    }
    else{
        if(t < s || t > c.back()) return c.back();
        return c[(int)(lower_bound(c.begin(), c.end(), t) - c.begin())];
    }
}

Compilation message

stations.cpp: In function 'int dfs(int)':
stations.cpp:10:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for(int i = 0;i < path[x].size();i++){
      |                   ~~^~~~~~~~~~~~~~~~
stations.cpp: In function 'void dfs2(int, int, int, int)':
stations.cpp:20:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i = 0;i < path[x].size();i++){
      |                   ~~^~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 553 ms 1008 KB Output is correct
2 Correct 487 ms 1024 KB Output is correct
3 Correct 858 ms 768 KB Output is correct
4 Correct 664 ms 872 KB Output is correct
5 Correct 584 ms 1048 KB Output is correct
6 Correct 437 ms 768 KB Output is correct
7 Correct 449 ms 920 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 3 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 439 ms 808 KB Output is correct
2 Correct 529 ms 820 KB Output is correct
3 Correct 883 ms 876 KB Output is correct
4 Correct 659 ms 1028 KB Output is correct
5 Correct 633 ms 872 KB Output is correct
6 Correct 445 ms 824 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 546 ms 1148 KB Output is correct
2 Correct 472 ms 1272 KB Output is correct
3 Correct 892 ms 872 KB Output is correct
4 Correct 742 ms 768 KB Output is correct
5 Correct 640 ms 1000 KB Output is correct
6 Correct 469 ms 768 KB Output is correct
7 Correct 435 ms 788 KB Output is correct
8 Correct 3 ms 872 KB Output is correct
9 Correct 5 ms 880 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 736 ms 872 KB Output is correct
12 Correct 590 ms 776 KB Output is correct
13 Correct 498 ms 784 KB Output is correct
14 Correct 579 ms 820 KB Output is correct
15 Correct 59 ms 860 KB Output is correct
16 Correct 65 ms 972 KB Output is correct
17 Correct 117 ms 1160 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 891 ms 1040 KB Output is correct
2 Correct 692 ms 864 KB Output is correct
3 Correct 752 ms 872 KB Output is correct
4 Correct 3 ms 768 KB Output is correct
5 Correct 5 ms 768 KB Output is correct
6 Correct 1 ms 896 KB Output is correct
7 Correct 624 ms 784 KB Output is correct
8 Correct 1057 ms 872 KB Output is correct
9 Correct 682 ms 768 KB Output is correct
10 Correct 599 ms 880 KB Output is correct
11 Correct 6 ms 1024 KB Output is correct
12 Correct 6 ms 876 KB Output is correct
13 Correct 6 ms 876 KB Output is correct
14 Correct 5 ms 884 KB Output is correct
15 Correct 1 ms 768 KB Output is correct
16 Correct 488 ms 768 KB Output is correct
17 Correct 618 ms 768 KB Output is correct
18 Correct 691 ms 1032 KB Output is correct
19 Correct 674 ms 872 KB Output is correct
20 Correct 482 ms 768 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 546 ms 772 KB Output is correct
2 Correct 513 ms 776 KB Output is correct
3 Correct 904 ms 896 KB Output is correct
4 Correct 661 ms 1040 KB Output is correct
5 Correct 647 ms 880 KB Output is correct
6 Correct 516 ms 768 KB Output is correct
7 Correct 434 ms 800 KB Output is correct
8 Correct 3 ms 1004 KB Output is correct
9 Correct 5 ms 872 KB Output is correct
10 Correct 2 ms 768 KB Output is correct
11 Correct 553 ms 808 KB Output is correct
12 Correct 622 ms 820 KB Output is correct
13 Correct 1000 ms 768 KB Output is correct
14 Correct 736 ms 1000 KB Output is correct
15 Correct 738 ms 900 KB Output is correct
16 Correct 570 ms 768 KB Output is correct
17 Correct 640 ms 872 KB Output is correct
18 Correct 486 ms 888 KB Output is correct
19 Correct 468 ms 768 KB Output is correct
20 Correct 447 ms 824 KB Output is correct
21 Correct 62 ms 768 KB Output is correct
22 Correct 76 ms 960 KB Output is correct
23 Correct 105 ms 1024 KB Output is correct
24 Correct 6 ms 768 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 768 KB Output is correct
28 Correct 1 ms 768 KB Output is correct
29 Correct 497 ms 768 KB Output is correct
30 Correct 606 ms 872 KB Output is correct
31 Correct 511 ms 884 KB Output is correct
32 Correct 481 ms 1040 KB Output is correct
33 Correct 523 ms 768 KB Output is correct
34 Correct 313 ms 1024 KB Output is correct
35 Correct 566 ms 1008 KB Output is correct
36 Correct 474 ms 768 KB Output is correct
37 Correct 466 ms 888 KB Output is correct
38 Correct 567 ms 992 KB Output is correct
39 Correct 493 ms 784 KB Output is correct
40 Correct 492 ms 896 KB Output is correct
41 Correct 520 ms 784 KB Output is correct
42 Correct 64 ms 768 KB Output is correct
43 Correct 107 ms 824 KB Output is correct
44 Correct 137 ms 1024 KB Output is correct
45 Correct 224 ms 768 KB Output is correct
46 Correct 415 ms 824 KB Output is correct
47 Correct 352 ms 804 KB Output is correct
48 Correct 75 ms 768 KB Output is correct
49 Correct 79 ms 1024 KB Output is correct