oj.uz

Submission #421477

# Submission time Handle Problem Language Result Execution time Memory
421477 2021-06-09T07:59:57 Z schse Ancient Books (IOI17_books) C++17
50 / 100
 256 ms 27544 KB 
#include "books.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include <bits/stdc++.h>
using namespace std;

long long minimum_walk(std::vector<int> p, int s)
{

	vector<int> cycle(p.size(), -1);
	vector<vector<int>> cycles;
	vector<pair<int, int>> cmmc;
	long long triplenght = 0;

	for (int i = 0; i < p.size(); i++)
	{
		if (cycle[i] == -1 && p[i] != i)
		{
			int t = i;
			cycles.push_back({});
			cmmc.push_back({INT32_MAX, INT32_MIN});
			do
			{
				cmmc[cmmc.size() - 1].first = min(cmmc[cmmc.size() - 1].first, t);
				cmmc[cmmc.size() - 1].second = max(cmmc[cmmc.size() - 1].second, t);
				cycles[cycles.size() - 1].push_back(t);
				cycle[t] = cycles.size();
				triplenght += abs(t - p[t]);
				t = p[t];
			} while (t != i);
		}
	}
	if (cmmc.size() == 0)
		return 0;

	int t = 0;
	while (cycle[max(s - t, 0)] == -1 && cycle[min(s + t, (int)cycle.size() - 1)] == -1)
		t++;

	for (auto i : cmmc)
	{
		if (i.first <= i.first && s <= i.second)
		{
			triplenght += 2 * t;
			break;
		}
	}

	// triplenght += 2 * cmmc[0].first; //initial walk

	int mx = cmmc[0].second;
	for (int i = 1; i < cmmc.size(); i++)
	{
		if (mx < cmmc[i].first)
			triplenght += abs(cmmc[i].first - mx) * 2;
		mx = max(mx, cmmc[i].second);
	}

	return triplenght;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for (int i = 0; i < p.size(); i++)
      |                  ~~^~~~~~~~~~
books.cpp:43:15: warning: self-comparison always evaluates to true [-Wtautological-compare]
   43 |   if (i.first <= i.first && s <= i.second)
      |       ~~~~~~~ ^~ ~~~~~~~
books.cpp:53:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for (int i = 1; i < cmmc.size(); i++)
      |                  ~~^~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 256 ms 16844 KB Output is correct
31 Correct 248 ms 17340 KB Output is correct
32 Correct 122 ms 12000 KB Output is correct
33 Correct 174 ms 24224 KB Output is correct
34 Correct 161 ms 24192 KB Output is correct
35 Correct 169 ms 26136 KB Output is correct
36 Correct 175 ms 25364 KB Output is correct
37 Correct 184 ms 18848 KB Output is correct
38 Correct 140 ms 17764 KB Output is correct
39 Correct 157 ms 17732 KB Output is correct
40 Correct 142 ms 16748 KB Output is correct
41 Correct 167 ms 16640 KB Output is correct
42 Correct 203 ms 16472 KB Output is correct
43 Correct 228 ms 27544 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 256 ms 16844 KB Output is correct
31 Correct 248 ms 17340 KB Output is correct
32 Correct 122 ms 12000 KB Output is correct
33 Correct 174 ms 24224 KB Output is correct
34 Correct 161 ms 24192 KB Output is correct
35 Correct 169 ms 26136 KB Output is correct
36 Correct 175 ms 25364 KB Output is correct
37 Correct 184 ms 18848 KB Output is correct
38 Correct 140 ms 17764 KB Output is correct
39 Correct 157 ms 17732 KB Output is correct
40 Correct 142 ms 16748 KB Output is correct
41 Correct 167 ms 16640 KB Output is correct
42 Correct 203 ms 16472 KB Output is correct
43 Correct 228 ms 27544 KB Output is correct
44 Incorrect 1 ms 204 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -