oj.uz

Submission #321227

# Submission time Handle Problem Language Result Execution time Memory
321227 2020-11-11T15:29:32 Z giorgikob Stations (IOI20_stations) C++14
100 / 100
 1093 ms 1248 KB 
#include "stations.h"
#include <vector>
#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define pb push_back
using namespace std;

const int N = 1e3+5;

vector<int>gr[N];

int cnt = 0;
int fix[N];
int mn[N];
int in[N], out[N];
vector<pair<int,int>>P;

void dfs(int x, int h, vector<int>&v){
    fix[x] = 1;
    in[x] = cnt;cnt++;
    for(auto to : gr[x]){
        if(fix[to]) continue;
        dfs(to,h+1,v);
    }
    out[x] = cnt;cnt++;
    if(h%2){
        //v[x] = out[x];
        P.pb({out[x],x});
    } else {
        //v[x] = in[x];
        P.pb({in[x],x});
    }
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {

	std::vector<int> labels(n,0);
	for(int i = 0; i < u.size(); i++){
        int x = u[i];
        int y = v[i];
        gr[x].pb(y);
        gr[y].pb(x);
	}

	cnt = 0;
    dfs(0,0,labels);

    sort(P.begin(),P.end());
    for(int i = 0; i < P.size(); i++){
        labels[P[i].ss] = i;
    }

    P.clear();
	for(int i = 0; i < n; i++) gr[i].clear(), fix[i] = 0;

	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
    /*cout << "test case" << endl;
    cout << s << " " << t << endl;
    for(auto x : c) cout << x << " "; cout << endl;
    cout << "end of test case" << endl;
    */
    if(c.size() == 1) return c[0];

    if(c[0] < s){
        for(int i = 1; i < c.size(); i++){
            int in = c[i];
            int out = (c[i] == c.back()) ? (s-1) : (c[i+1] - 1);
            if(in <= t && t <= out) return c[i];
        }
        return c[0];
    } else {
        for(int i = 0; i < c.size() - 1; i++){
            int in = (i == 0) ? (s + 1) : (c[i-1] + 1);
            int out = c[i];
            if(in <= t && t <= out) return c[i];
        }
        return c.back();
    }
}

Compilation message

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:40:19: 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 < u.size(); i++){
      |                 ~~^~~~~~~~~~
stations.cpp:51:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     for(int i = 0; i < P.size(); i++){
      |                    ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:70:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |         for(int i = 1; i < c.size(); i++){
      |                        ~~^~~~~~~~~~
stations.cpp:77:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |         for(int i = 0; i < c.size() - 1; i++){
      |                        ~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 581 ms 1024 KB Output is correct
2 Correct 442 ms 1028 KB Output is correct
3 Correct 1039 ms 940 KB Output is correct
4 Correct 703 ms 688 KB Output is correct
5 Correct 689 ms 992 KB Output is correct
6 Correct 530 ms 992 KB Output is correct
7 Correct 471 ms 1152 KB Output is correct
8 Correct 3 ms 736 KB Output is correct
9 Correct 6 ms 736 KB Output is correct
10 Correct 2 ms 948 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 537 ms 864 KB Output is correct
2 Correct 575 ms 1116 KB Output is correct
3 Correct 876 ms 736 KB Output is correct
4 Correct 704 ms 736 KB Output is correct
5 Correct 692 ms 824 KB Output is correct
6 Correct 451 ms 868 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 513 ms 1048 KB Output is correct
2 Correct 436 ms 992 KB Output is correct
3 Correct 1035 ms 940 KB Output is correct
4 Correct 664 ms 940 KB Output is correct
5 Correct 660 ms 1120 KB Output is correct
6 Correct 482 ms 1040 KB Output is correct
7 Correct 454 ms 948 KB Output is correct
8 Correct 3 ms 736 KB Output is correct
9 Correct 5 ms 948 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 548 ms 900 KB Output is correct
12 Correct 437 ms 1116 KB Output is correct
13 Correct 472 ms 1048 KB Output is correct
14 Correct 506 ms 992 KB Output is correct
15 Correct 51 ms 864 KB Output is correct
16 Correct 64 ms 736 KB Output is correct
17 Correct 112 ms 992 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 933 ms 936 KB Output is correct
2 Correct 766 ms 864 KB Output is correct
3 Correct 650 ms 968 KB Output is correct
4 Correct 3 ms 1244 KB Output is correct
5 Correct 5 ms 940 KB Output is correct
6 Correct 2 ms 864 KB Output is correct
7 Correct 649 ms 944 KB Output is correct
8 Correct 1093 ms 992 KB Output is correct
9 Correct 788 ms 932 KB Output is correct
10 Correct 604 ms 864 KB Output is correct
11 Correct 7 ms 736 KB Output is correct
12 Correct 7 ms 900 KB Output is correct
13 Correct 5 ms 736 KB Output is correct
14 Correct 3 ms 736 KB Output is correct
15 Correct 3 ms 864 KB Output is correct
16 Correct 656 ms 944 KB Output is correct
17 Correct 511 ms 992 KB Output is correct
18 Correct 587 ms 936 KB Output is correct
19 Correct 643 ms 864 KB Output is correct
20 Correct 557 ms 944 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 541 ms 992 KB Output is correct
2 Correct 445 ms 992 KB Output is correct
3 Correct 873 ms 932 KB Output is correct
4 Correct 611 ms 736 KB Output is correct
5 Correct 611 ms 864 KB Output is correct
6 Correct 453 ms 864 KB Output is correct
7 Correct 490 ms 1076 KB Output is correct
8 Correct 3 ms 944 KB Output is correct
9 Correct 5 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 512 ms 736 KB Output is correct
12 Correct 528 ms 924 KB Output is correct
13 Correct 882 ms 864 KB Output is correct
14 Correct 657 ms 936 KB Output is correct
15 Correct 616 ms 936 KB Output is correct
16 Correct 540 ms 872 KB Output is correct
17 Correct 719 ms 936 KB Output is correct
18 Correct 470 ms 1184 KB Output is correct
19 Correct 490 ms 1160 KB Output is correct
20 Correct 526 ms 864 KB Output is correct
21 Correct 63 ms 940 KB Output is correct
22 Correct 84 ms 736 KB Output is correct
23 Correct 112 ms 872 KB Output is correct
24 Correct 7 ms 948 KB Output is correct
25 Correct 7 ms 736 KB Output is correct
26 Correct 5 ms 936 KB Output is correct
27 Correct 3 ms 948 KB Output is correct
28 Correct 2 ms 736 KB Output is correct
29 Correct 530 ms 736 KB Output is correct
30 Correct 545 ms 736 KB Output is correct
31 Correct 585 ms 936 KB Output is correct
32 Correct 544 ms 940 KB Output is correct
33 Correct 575 ms 1020 KB Output is correct
34 Correct 351 ms 1056 KB Output is correct
35 Correct 419 ms 992 KB Output is correct
36 Correct 567 ms 1036 KB Output is correct
37 Correct 511 ms 1192 KB Output is correct
38 Correct 438 ms 1092 KB Output is correct
39 Correct 491 ms 1116 KB Output is correct
40 Correct 590 ms 1072 KB Output is correct
41 Correct 572 ms 1112 KB Output is correct
42 Correct 75 ms 1024 KB Output is correct
43 Correct 143 ms 736 KB Output is correct
44 Correct 119 ms 864 KB Output is correct
45 Correct 177 ms 992 KB Output is correct
46 Correct 338 ms 1000 KB Output is correct
47 Correct 327 ms 1020 KB Output is correct
48 Correct 80 ms 1248 KB Output is correct
49 Correct 74 ms 1072 KB Output is correct