oj.uz

Submission #306432

# Submission time Handle Problem Language Result Execution time Memory
306432 2020-09-25T14:54:13 Z luciocf Stations (IOI20_stations) C++14
100 / 100
 1093 ms 1312 KB 
#include <bits/stdc++.h>
#include "stations.h"
#include <vector>
 
using namespace std;
 
const int maxn = 1e3+10;
 
static int st[maxn], en[maxn], nivel[maxn], tt;
 
vector<int> grafo[maxn];
 
void dfs(int u, int p)
{
	st[u] = ++tt;
 
	for (auto v: grafo[u])
	{
		if (v == p) continue;
 
		nivel[v] = nivel[u]+1;
 
		dfs(v, u);
	}
 
	en[u] = ++tt;
}
 
vector<int> label(int n, int k, vector<int> u, vector<int> v)
{
	tt = -1;
	for (int i = 0; i < n; i++)
		grafo[i].clear();
 
	for (int i = 0; i < n-1; i++)
	{
		grafo[u[i]].push_back(v[i]);
		grafo[v[i]].push_back(u[i]);
	}
 
	dfs(0, -1);
 
	vector<int> num;
 
	for (int i = 0; i < n; i++)
	{
		if (nivel[i]%2 == 0) num.push_back(st[i]);
		else num.push_back(en[i]);
	}
 
	map<int, int> mp;
 
	for (auto x: num)
		mp[x] = 0;
 
	int aux = 0;
	for (auto &x: mp)
		x.second = ++aux;
 
	for (auto &x: num)
		x = mp[x];
 
	return num;
}
 
int find_next_station(int u, int v, vector<int> c)
{
	if (c.size() == 1) return c[0];
 
	bool flag = 0;
 
	for (auto x: c)
		if (u < x)
			flag = 1;
 
	if (!flag)
	{
		for (int i = 1; i < c.size()-1; i++)
		{
			st[i] = c[i];
			en[i] = c[i+1]-1;
		}
 
		st[c.size()-1] = c[c.size()-1];
		en[c.size()-1] = u;
 
		for (int i = 1; i < c.size(); i++)
			if (v >= st[i] && v <= en[i])
				return c[i];
 
		return c[0];
	}
	else
	{
		st[0] = u+1;
		en[0] = c[0];
 
		for (int i = 1; i < c.size()-1; i++)
		{
			en[i] = c[i];
			st[i] = en[i-1]+1;
		}
 
		for (int i = 0; i < c.size()-1; i++)
			if (v >= st[i] && v <= en[i])
				return c[i];
 
		return c[c.size()-1];
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:78:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |   for (int i = 1; i < c.size()-1; i++)
      |                   ~~^~~~~~~~~~~~
stations.cpp:87:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |   for (int i = 1; i < c.size(); i++)
      |                   ~~^~~~~~~~~~
stations.cpp:98:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |   for (int i = 1; i < c.size()-1; i++)
      |                   ~~^~~~~~~~~~~~
stations.cpp:104:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |   for (int i = 0; i < c.size()-1; i++)
      |                   ~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 541 ms 1312 KB Output is correct
2 Correct 454 ms 1024 KB Output is correct
3 Correct 894 ms 864 KB Output is correct
4 Correct 663 ms 868 KB Output is correct
5 Correct 589 ms 768 KB Output is correct
6 Correct 476 ms 1024 KB Output is correct
7 Correct 453 ms 1124 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 5 ms 868 KB Output is correct
10 Correct 1 ms 896 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 452 ms 768 KB Output is correct
2 Correct 513 ms 908 KB Output is correct
3 Correct 863 ms 860 KB Output is correct
4 Correct 693 ms 768 KB Output is correct
5 Correct 607 ms 768 KB Output is correct
6 Correct 458 ms 776 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 527 ms 1112 KB Output is correct
2 Correct 456 ms 1008 KB Output is correct
3 Correct 894 ms 872 KB Output is correct
4 Correct 681 ms 864 KB Output is correct
5 Correct 650 ms 1024 KB Output is correct
6 Correct 470 ms 1280 KB Output is correct
7 Correct 462 ms 1112 KB Output is correct
8 Correct 3 ms 868 KB Output is correct
9 Correct 6 ms 996 KB Output is correct
10 Correct 2 ms 1000 KB Output is correct
11 Correct 686 ms 864 KB Output is correct
12 Correct 501 ms 1024 KB Output is correct
13 Correct 465 ms 1088 KB Output is correct
14 Correct 461 ms 1024 KB Output is correct
15 Correct 58 ms 856 KB Output is correct
16 Correct 68 ms 800 KB Output is correct
17 Correct 118 ms 1140 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 848 ms 1040 KB Output is correct
2 Correct 672 ms 768 KB Output is correct
3 Correct 571 ms 868 KB Output is correct
4 Correct 2 ms 768 KB Output is correct
5 Correct 5 ms 896 KB Output is correct
6 Correct 1 ms 872 KB Output is correct
7 Correct 597 ms 868 KB Output is correct
8 Correct 893 ms 1008 KB Output is correct
9 Correct 632 ms 864 KB Output is correct
10 Correct 610 ms 1040 KB Output is correct
11 Correct 5 ms 768 KB Output is correct
12 Correct 7 ms 768 KB Output is correct
13 Correct 6 ms 896 KB Output is correct
14 Correct 5 ms 864 KB Output is correct
15 Correct 2 ms 768 KB Output is correct
16 Correct 563 ms 1024 KB Output is correct
17 Correct 573 ms 864 KB Output is correct
18 Correct 515 ms 872 KB Output is correct
19 Correct 492 ms 860 KB Output is correct
20 Correct 581 ms 1000 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 632 ms 1024 KB Output is correct
2 Correct 575 ms 1024 KB Output is correct
3 Correct 1093 ms 1008 KB Output is correct
4 Correct 819 ms 1024 KB Output is correct
5 Correct 697 ms 864 KB Output is correct
6 Correct 519 ms 1040 KB Output is correct
7 Correct 554 ms 1008 KB Output is correct
8 Correct 3 ms 1024 KB Output is correct
9 Correct 6 ms 864 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 480 ms 768 KB Output is correct
12 Correct 554 ms 768 KB Output is correct
13 Correct 835 ms 868 KB Output is correct
14 Correct 633 ms 996 KB Output is correct
15 Correct 621 ms 1024 KB Output is correct
16 Correct 499 ms 768 KB Output is correct
17 Correct 580 ms 864 KB Output is correct
18 Correct 581 ms 1008 KB Output is correct
19 Correct 576 ms 1092 KB Output is correct
20 Correct 496 ms 768 KB Output is correct
21 Correct 55 ms 856 KB Output is correct
22 Correct 80 ms 928 KB Output is correct
23 Correct 100 ms 1140 KB Output is correct
24 Correct 6 ms 768 KB Output is correct
25 Correct 7 ms 768 KB Output is correct
26 Correct 5 ms 868 KB Output is correct
27 Correct 5 ms 768 KB Output is correct
28 Correct 2 ms 864 KB Output is correct
29 Correct 559 ms 896 KB Output is correct
30 Correct 582 ms 864 KB Output is correct
31 Correct 547 ms 860 KB Output is correct
32 Correct 655 ms 868 KB Output is correct
33 Correct 639 ms 868 KB Output is correct
34 Correct 413 ms 1124 KB Output is correct
35 Correct 439 ms 1008 KB Output is correct
36 Correct 427 ms 1100 KB Output is correct
37 Correct 499 ms 1120 KB Output is correct
38 Correct 544 ms 1112 KB Output is correct
39 Correct 462 ms 1024 KB Output is correct
40 Correct 511 ms 1136 KB Output is correct
41 Correct 518 ms 1008 KB Output is correct
42 Correct 61 ms 768 KB Output is correct
43 Correct 144 ms 1024 KB Output is correct
44 Correct 141 ms 1024 KB Output is correct
45 Correct 181 ms 1024 KB Output is correct
46 Correct 388 ms 1040 KB Output is correct
47 Correct 311 ms 1140 KB Output is correct
48 Correct 61 ms 1240 KB Output is correct
49 Correct 62 ms 1108 KB Output is correct