oj.uz

Submission #703747

# Submission time Handle Problem Language Result Execution time Memory
703747 2023-02-28T09:04:07 Z 600Mihnea Palembang Bridges (APIO15_bridge) C++17
22 / 100
 53 ms 5644 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];

struct T
{
	int fi;
	int sc;
};

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++)
	{
		vector<T> ovr;
		for (auto& s : segs)
		{
			if (co[px] <= s.first)
			{
				ovr.push_back({ s.first, s.second });
			}
		}
		sort(ovr.begin(), ovr.end(), [&](T a, T b) {return a.sc < b.sc; });
		for (int py = px + 1; py < (int)co.size(); py++)
		{
			int cur = 0;
			for (int i = 0; i < (int)ovr.size(); i++)
			{
				if (ovr[i].sc <= co[py] && co[py] <= ovr[i].fi + ovr[i].sc - co[px])
				{
					cur += co[py] - ovr[i].sc;
				}
				if (co[px] >= ovr[i].fi + ovr[i].sc - co[py])
				{
					cur += ovr[i].fi - co[px];
				}
			}
			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 1 ms 212 KB Output is correct
2 Correct 1 ms 340 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 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

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 1 ms 352 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 31 ms 5624 KB Output is correct
13 Correct 40 ms 5636 KB Output is correct
14 Correct 41 ms 5276 KB Output is correct
15 Correct 28 ms 3276 KB Output is correct
16 Correct 38 ms 5576 KB Output is correct
17 Correct 37 ms 5628 KB Output is correct
18 Correct 53 ms 5552 KB Output is correct
19 Correct 41 ms 5552 KB Output is correct
20 Correct 43 ms 5644 KB Output is correct
21 Correct 38 ms 5580 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 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 3 ms 364 KB Output is correct
11 Incorrect 1 ms 340 KB Output isn't correct
12 Halted 0 ms 0 KB -

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 1 ms 340 KB Output is correct
4 Correct 2 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 3 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 3 ms 360 KB Output is correct
11 Incorrect 0 ms 340 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 384 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 360 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Incorrect 1 ms 340 KB Output isn't correct
12 Halted 0 ms 0 KB -