oj.uz

Submission #703742

# Submission time Handle Problem Language Result Execution time Memory
703742 2023-02-28T08:52:49 Z 600Mihnea Palembang Bridges (APIO15_bridge) C++17
31 / 100
 2000 ms 5636 KB 
#include <cmath>
#include <functional>
#include <fstream>
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <map>
#include <list>
#include <time.h>
#include <math.h>
#include <random>
#include <deque>
#include <queue>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <cassert>
#include <bitset>
#include <sstream>
#include <chrono>
#include <cstring>
#include <numeric>

using namespace std;

#define int long long 

const int INF = (int)1e18 + 7;

pair<int, int> _rd_()
{
	string s;
	int i;
	cin >> s >> i;
	assert(s == "A" || s == "B");
	return { s == "B", i };
}

const int N = (int)1e5 + 7;
int k;
int n;
int extra;
pair<int, int> c1[N], c2[N];

signed main()
{
#ifdef ONPC	
	FILE* stream;
	freopen_s(&stream, "input.txt", "r", stdin);
#else
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#endif

	cin >> k >> n;
	{
		int y = 0;
		for (int i = 1; i <= n; i++)
		{
			c1[i] = _rd_();
			c2[i] = _rd_();
			if (c1[i].first == c2[i].first)
			{
				extra += abs(c1[i].second - c2[i].second);
				continue;
			}
			y++;
			c1[y] = c1[i];
			c2[y] = c2[i];
		}
		n = y;
	}
	if (n == 0)
	{
		cout << extra << "\n";
		return 0;
	}
	if (k == 1)
	{
		vector<int> coords;
		for (int i = 1; i <= n; i++)
		{
			coords.push_back(c1[i].second);
			coords.push_back(c2[i].second);
		}
		nth_element(coords.begin(), coords.begin() + n - 1, coords.end());
		int su = 0;
		for (int i = 0; i < 2 * n; i++)
		{
			su += abs(coords[i] - coords[n - 1]);
		}
		cout << su + extra + n << "\n";
		return 0;
	}
	assert(k == 2);
	set<int> s;
	for (int i = 1; i <= n; i++)
	{
		s.insert(c1[i].second);
		s.insert(c2[i].second);
		if (c1[i].second > c2[i].second)
		{
			swap(c1[i], c2[i]);
		}
	}
	vector<pair<int, int>> segs;
	for (int i = 1; i <= n; i++)
	{
		segs.push_back({ c1[i].second, c2[i].second });
	}
	vector<int> co;
	for (auto& x : s)
	{
		co.push_back(x);
	}
	assert(!co.empty());
	co.push_back(co.back());
	assert((int)co.size() >= 2);
	vector<int> coords;
	for (int i = 1; i <= n; i++)
	{
		coords.push_back(c1[i].second);
		coords.push_back(c2[i].second);
	}
	sort(coords.begin(), coords.end());
	vector<int> lft((int)co.size(), 0);
	vector<int> rgh((int)co.size(), 0);
	for (int i = 0; i < (int)co.size(); i++)
	{
		for (auto& s : segs)
		{
			if (s.second < co[i])
			{
				lft[i] += co[i] - s.second;
			}
		}
		for (auto& s : segs)
		{
			if (co[i] < s.first)
			{
				rgh[i] += s.first - co[i];
			}
		}
	}
	int sol = INF;
	for (int px = 0; px < (int)co.size(); px++)
	{
		for (int py = px + 1; py < (int)co.size(); py++)
		{
			int x = co[px];
			int y = co[py];
			int cur = 0;
			for (auto& s : segs)
			{
				if (s.first <= x && x <= s.second)
				{
					continue;
				}
				if (s.first <= y && y <= s.second)
				{
					continue;
				}
				if (x < s.first && s.second < y)
				{
					if (y + x <= s.first + s.second)
					{
						cur += y - s.second;
					}
					else
					{
						cur += s.first - x;
					}
				}
			}
			sol = min(sol, cur + lft[px] + rgh[py]);
		}
	}
	for (int i = 1; i <= n; i++)
	{
		extra += abs(c1[i].second - c2[i].second);
	}
	cout << 2 * sol + extra + n << "\n";
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 220 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 392 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 32 ms 5532 KB Output is correct
13 Correct 43 ms 5544 KB Output is correct
14 Correct 31 ms 5320 KB Output is correct
15 Correct 24 ms 3252 KB Output is correct
16 Correct 38 ms 5588 KB Output is correct
17 Correct 38 ms 5584 KB Output is correct
18 Correct 39 ms 5564 KB Output is correct
19 Correct 48 ms 5636 KB Output is correct
20 Correct 58 ms 5612 KB Output is correct
21 Correct 40 ms 5576 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 4 ms 340 KB Output is correct

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 4 ms 356 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 15 ms 428 KB Output is correct
15 Execution timed out 2062 ms 468 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 4 ms 360 KB Output is correct
9 Correct 3 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 4 ms 304 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 15 ms 340 KB Output is correct
15 Execution timed out 2092 ms 468 KB Time limit exceeded
16 Halted 0 ms 0 KB -