oj.uz

Submission #213131

# Submission time Handle Problem Language Result Execution time Memory
213131 2020-03-25T04:05:15 Z ainta Hamburg Steak (JOI20_hamburg) C++17
15 / 100
 228 ms 4356 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 };
	for (i = 0; i < n; i++)if (Inside(w[i], U[0]))C[i]++;
	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 };
	for (i = 0; i < n; i++)if (Inside(w[i], U[0]))C[i]++;
	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 288 KB Output is correct
3 Correct 3 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 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 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 288 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 3 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 3 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 6 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 4 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 6 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 139 ms 4264 KB Output is correct
6 Correct 154 ms 4260 KB Output is correct
7 Correct 145 ms 4268 KB Output is correct
8 Correct 131 ms 4256 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 288 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 181 ms 4356 KB Output is correct
6 Correct 166 ms 4216 KB Output is correct
7 Correct 178 ms 4256 KB Output is correct
8 Correct 170 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 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 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 288 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 177 ms 4256 KB Output is correct
14 Correct 158 ms 4264 KB Output is correct
15 Correct 142 ms 4344 KB Output is correct
16 Correct 140 ms 4196 KB Output is correct
17 Correct 178 ms 4216 KB Output is correct
18 Correct 210 ms 4272 KB Output is correct
19 Correct 172 ms 4216 KB Output is correct
20 Correct 168 ms 4216 KB Output is correct
21 Correct 176 ms 4280 KB Output is correct
22 Correct 228 ms 4344 KB Output is correct
23 Correct 146 ms 4344 KB Output is correct
24 Correct 148 ms 4264 KB Output is correct

Subtask #8
0 / 79.0

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