oj.uz

Submission #213132

# Submission time Handle Problem Language Result Execution time Memory
213132 2020-03-25T04:07:56 Z ainta Hamburg Steak (JOI20_hamburg) C++17
15 / 100
 212 ms 4280 KB 
#include<cstdio>
#include<algorithm>
#include<vector>
#define N_ 201000
using namespace std;
int K, C[N_];
struct Rect {
	int bx, by, ex, ey;
};
vector<Rect>w;
struct point {
	int x, y;
}U[5];
bool Inside(Rect a, point b) {
	return a.bx <= b.x&&b.x <= a.ex&&a.by <= b.y&&b.y <= a.ey;
}
void Print(point a) {
	printf("%d %d\n", a.x, a.y);
}
void Do(int pv, int n) {
	int i;
	if (pv) {
		for (i = 0; i < n; i++)if (Inside(w[i], U[pv - 1]))C[i]++;
	}
	if (pv == K) {
		for (i = 0; i < n; i++) if (!C[i])break;
		if (i >= n) {
			for (i = 0; i < K; i++)Print(U[i]);
			exit(0);
		}
		for (i = 0; i < n; i++)if (Inside(w[i], U[pv - 1]))C[i]--;
		return;
	}
	int Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = 0; i < n; i++) {
		if (C[i])continue;
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
	}
	if (pv == K - 1) {
		if (Ax <= Bx && Ay <= By) {
			U[pv] = { Ax,Ay };
			Do(pv + 1, n);
		}
		else {
			if (pv) for (i = 1; i <= n; i++)if (Inside(w[i], U[pv - 1]))C[i]--;
			return;
		}
	}
	int yy1 = 0, yy2 = 1e9, yy3 = 0, yy4 = 1e9;
	int xx1 = 0, xx2 = 1e9, xx3 = 0, xx4 = 1e9;
	for (i = 0; i < n; i++) {
		if (C[i])continue;
		if (w[i].bx <= Bx) {
			yy1 = max(yy1, w[i].by);
			yy2 = min(yy2, w[i].ey);
		}
		if (w[i].ex >= Ax) {
			yy3 = max(yy3, w[i].by);
			yy4 = min(yy4, w[i].ey);
		}
		if (w[i].by <= By) {
			xx1 = max(xx1, w[i].bx);
			xx2 = min(xx2, w[i].ex);
		}
		if (w[i].ey >= Ay) {
			xx3 = max(xx3, w[i].bx);
			xx4 = min(xx4, w[i].ex);
		}
	}
	U[pv] = { Bx, yy1 };
	Do(pv + 1, n);
	U[pv] = { Bx, yy2 };
	Do(pv + 1, n);
	U[pv] = { Ax, yy3 };
	Do(pv + 1, n);
	U[pv] = { Ax, yy4 };
	Do(pv + 1, n);
	if (pv) {
		for (i = 0; i < n; i++)if (Inside(w[i], U[pv - 1]))C[i]--;
	}
}
int main() {
	int i, n;
	scanf("%d%d", &n, &K);
	w.resize(n);
	for (i = 0; i < n; i++) {
		scanf("%d%d%d%d", &w[i].bx, &w[i].by, &w[i].ex, &w[i].ey);
	}	
	Do(0, n);

	std::sort(w.begin(),w.end(), [](auto const& l, auto const& r) {
		return l.bx < r.bx;
	});
	int Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n-1; i >= 0; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
		if (Ax > Bx || Ay > By)break;
	}
	int pv = i; Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n-1; i > pv; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
	}
	U[0] = { Ax,Ay };
	Do(1, n);
	for (i = 0; i < n; i++)C[i] = 0;

	std::sort(w.begin(), w.end(), [](auto const& l, auto const& r) {
		return l.ex > r.ex;
	});

	Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n - 1; i >= 0; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
		if (Ax > Bx || Ay > By)break;
	}
	pv = i; Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n - 1; i > pv; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
	}
	U[0] = { Ax,Ay };
	Do(1, n);
	for (i = 0; i < n; i++)C[i] = 0;



	std::sort(w.begin(), w.end(), [](auto const& l, auto const& r) {
		return l.by < r.by;
	});
	Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n - 1; i >= 0; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
		if (Ax > Bx || Ay > By)break;
	}
	pv = i; Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n - 1; i > pv; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
	}
	U[0] = { Ax,Ay };
	Do(1, n);
	for (i = 0; i < n; i++)C[i] = 0;

	std::sort(w.begin(), w.end(), [](auto const& l, auto const& r) {
		return l.ey > r.ey;
	});

	Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n - 1; i >= 0; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
		if (Ax > Bx || Ay > By)break;
	}
	pv = i; Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = n - 1; i > pv; i--) {
		Ax = max(Ax, w[i].bx);
		Ay = max(Ay, w[i].by);
		Bx = min(Bx, w[i].ex);
		By = min(By, w[i].ey);
	}
	U[0] = { Ax,Ay };
	Do(1, n);
	for (i = 0; i < n; i++)C[i] = 0;

}

Compilation message

hamburg.cpp: In function 'int main()':
hamburg.cpp:87:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   87 |  scanf("%d%d", &n, &K);
      |  ~~~~~^~~~~~~~~~~~~~~~
hamburg.cpp:90:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   90 |   scanf("%d%d%d%d", &w[i].bx, &w[i].by, &w[i].ex, &w[i].ey);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 360 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #3
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 360 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 8 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 7 ms 384 KB Output is correct
17 Correct 6 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Incorrect 10 ms 384 KB Unexpected end of file - int32 expected
21 Halted 0 ms 0 KB -

Subtask #5
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 136 ms 4264 KB Output is correct
6 Correct 147 ms 4192 KB Output is correct
7 Correct 157 ms 4264 KB Output is correct
8 Correct 162 ms 4216 KB Output is correct

Subtask #6
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 360 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 153 ms 4216 KB Output is correct
6 Correct 138 ms 4216 KB Output is correct
7 Correct 146 ms 4220 KB Output is correct
8 Correct 147 ms 4264 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 360 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 162 ms 4216 KB Output is correct
14 Correct 146 ms 4216 KB Output is correct
15 Correct 147 ms 4220 KB Output is correct
16 Correct 144 ms 4216 KB Output is correct
17 Correct 152 ms 4264 KB Output is correct
18 Correct 155 ms 4216 KB Output is correct
19 Correct 176 ms 4216 KB Output is correct
20 Correct 181 ms 4264 KB Output is correct
21 Correct 180 ms 4264 KB Output is correct
22 Correct 212 ms 4216 KB Output is correct
23 Correct 151 ms 4280 KB Output is correct
24 Correct 163 ms 4216 KB Output is correct

Subtask #8
0 / 79.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 8 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 7 ms 384 KB Output is correct
17 Correct 6 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Incorrect 10 ms 384 KB Unexpected end of file - int32 expected
21 Halted 0 ms 0 KB -