oj.uz

Submission #213083

# Submission time Handle Problem Language Result Execution time Memory
213083 2020-03-25T01:17:09 Z ainta Hamburg Steak (JOI20_hamburg) C++17
15 / 100
 267 ms 4344 KB 
#include<cstdio>
#include<algorithm>
#define N_ 201000
using namespace std;
int n, K, C[N_];
struct Rect {
	int bx, by, ex, ey;
}w[N_];
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 i;
	if (pv) {
		for (i = 1; i <= n; i++)if (Inside(w[i], U[pv - 1]))C[i]++;
	}
	if (pv == K) {
		for (i = 1; i <= n; i++) if (!C[i])break;
		if (i > n) {
			for (i = 0; i < K; i++)Print(U[i]);
			exit(0);
		}
		for (i = 1; i <= n; i++)if (Inside(w[i], U[pv - 1]))C[i]--;
		return;
	}
	int Ax = 0, Bx = 1e9, Ay = 0, By = 1e9;
	for (i = 1; 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);
		}
		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 = 1; 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);
	U[pv] = { Bx, yy2 };
	Do(pv + 1);
	U[pv] = { Ax, yy3 };
	Do(pv + 1);
	U[pv] = { Ax, yy4 };
	Do(pv + 1);
	U[pv] = { xx1, By };
	Do(pv + 1);
	U[pv] = { xx2, By };
	Do(pv + 1);
	U[pv] = { xx3, Ay };
	Do(pv + 1);
	U[pv] = { xx4, Ay };
	Do(pv + 1);
	if (pv) {
		for (i = 1; i <= n; i++)if (Inside(w[i], U[pv - 1]))C[i]--;
	}
}
int main() {
	int i;
	scanf("%d%d", &n, &K);
	for (i = 1; i <= n; i++) {
		scanf("%d%d%d%d", &w[i].bx, &w[i].by, &w[i].ex, &w[i].ey);
	}
	Do(0);

}

Compilation message

hamburg.cpp: In function 'int main()':
hamburg.cpp:93:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   93 |  scanf("%d%d", &n, &K);
      |  ~~~~~^~~~~~~~~~~~~~~~
hamburg.cpp:95:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   95 |   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 3 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 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct

Subtask #3
3.0 / 3.0

# 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 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 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 3 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 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 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 7 ms 408 KB Output is correct
10 Correct 7 ms 384 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 7 ms 384 KB Output is correct
14 Incorrect 28 ms 384 KB Unexpected end of file - int32 expected
15 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 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 140 ms 4216 KB Output is correct
6 Correct 129 ms 4216 KB Output is correct
7 Correct 141 ms 4216 KB Output is correct
8 Correct 148 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 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 178 ms 4216 KB Output is correct
6 Correct 171 ms 4216 KB Output is correct
7 Correct 164 ms 4344 KB Output is correct
8 Correct 145 ms 4260 KB Output is correct

Subtask #7
6.0 / 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 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 384 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 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 160 ms 4216 KB Output is correct
14 Correct 163 ms 4176 KB Output is correct
15 Correct 140 ms 4216 KB Output is correct
16 Correct 141 ms 4216 KB Output is correct
17 Correct 178 ms 4220 KB Output is correct
18 Correct 188 ms 4216 KB Output is correct
19 Correct 180 ms 4244 KB Output is correct
20 Correct 182 ms 4216 KB Output is correct
21 Correct 267 ms 4200 KB Output is correct
22 Correct 251 ms 4260 KB Output is correct
23 Correct 147 ms 4148 KB Output is correct
24 Correct 141 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 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 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 7 ms 408 KB Output is correct
10 Correct 7 ms 384 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 7 ms 384 KB Output is correct
14 Incorrect 28 ms 384 KB Unexpected end of file - int32 expected
15 Halted 0 ms 0 KB -