Submission #116236

#	Time	Username	Problem	Language	Result	Execution time	Memory
116236		emilem	Tram (CEOI13_tram)	C++14	25 / 100	1082 ms	8940 KiB

tram

#include <cstdint>
#include <iostream>
#include <vector>
const long long INF = 200000LL * 200000LL;
typedef std::int_least8_t ibool;
const ibool itrue = (ibool)true;
const ibool ifalse = (ibool)false;
struct Point
{
	typedef int Coord;
	explicit Point(int id_, int x_ = 0, int y_ = 0)
		: id(id_)
		, x(x_)
		, y(y_)
	{
	}

	int id;
	Coord x;
	Coord y;
};

inline long long Dist(const Point & a, const Point & b)
{
	return (b.x - a.x) * (b.x - a.x) + (b.y - a.y) * (b.y - a.y);
}
int main()
{
	int n, m;
	std::cin >> n >> m;
	std::vector< std::vector<ibool> > used(n + 1, std::vector<ibool>(3, ifalse));
	std::vector<Point> points;
	std::vector<Point> anspoints(m + 1, Point(-1, -1, -1));
	for (int q = 1; q <= m; ++q)
	{
		char type;
		std::cin >> type;
		if (type == 'E')
		{
			Point ans(q, 1, 1);
			long long ansdist = -1;
			for (int x = 1; x <= n; ++x)
				for (int y = 1; y <= 2; ++y)
				{
					if (used[x][y]) continue;
					Point curans(q, x, y);
					long long curdist = INF;
					for (auto point = points.begin(); point != points.end(); ++point)
						curdist = std::min(curdist, Dist(*point, curans));
					if (curdist > ansdist)
					{
						ans = curans;
						ansdist = curdist;
					}
				}
			used[ans.x][ans.y] = itrue;
			anspoints[q] = ans;
			points.push_back(ans);
		}
		else
		{
			int id;
			std::cin >> id;
			for (auto point = points.begin(); point != points.end(); ++point)
				if (point->id == id)
				{
					used[point->x][point->y] = false;
					std::swap(*point, *points.rbegin());
					points.pop_back();
					break;
				}
		}
	}
	for (int q = 1; q <= m; ++q)
		if (anspoints[q].id > 0)
			std::cout << anspoints[q].x << ' ' << anspoints[q].y << std::endl;

	char I;
	std::cin >> I;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 15
• Subtask 8: 0 / 20