oj.uz

Submission #671293

# Submission time Handle Problem Language Result Execution time Memory
671293 2022-12-12T18:43:29 Z rainboy Hamburg Steak (JOI20_hamburg) C
15 / 100
 243 ms 6604 KB 
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>

#define N	200000
#define K	4
#define INF	0x3f3f3f3f3f3f3f3fLL

long long min(long long a, long long b) { return a < b ? a : b; }
long long max(long long a, long long b) { return a > b ? a : b; }

long long xxl[N], xxr[N], yyl[N], yyr[N], xx[K], yy[K]; int n, k;

int pierced(int i, int h_) {
	int h;

	for (h = 0; h < h_; h++)
		if (xxl[i] <= xx[h] && xx[h] <= xxr[i] && yyl[i] <= yy[h] && yy[h] <= yyr[i])
			return 1;
	return 0;
}

void solve(int h_) {
	int h, i;
	long long xl, xr, yl, yr;

	xl = INF, xr = -1, yl = INF, yr = -1;
	for (i = 0; i < n; i++)
		if (!pierced(i, h_))
			xl = min(xl, xxr[i]), xr = max(xr, xxl[i]), yl = min(yl, yyr[i]), yr = max(yr, yyl[i]);
	if (xl == INF) {
		for (h = h_; h < k; h++)
			xx[h] = 1, yy[h] = 1;
		for (h = 0; h < k; h++)
			printf("%lld %lld\n", xx[h], yy[h]);
		exit(0);
	} else if (h_ < k) {
		xx[h_] = xl, yy[h_] = yl, solve(h_ + 1);
		xx[h_] = xl, yy[h_] = yr, solve(h_ + 1);
		xx[h_] = xr, yy[h_] = yl, solve(h_ + 1);
		xx[h_] = xr, yy[h_] = yr, solve(h_ + 1);
	}
}

long long ll[N], rr[N]; int ii0[N], ii1[N], ii2[N], n0, n1, n2; long long xl, xr, yl, yr, z1, z2, z3, z4;

long long idx(long long x, long long y) {
	if (y == yl)
		return x - xl;
	if (x == xr)
		return z1 + y - yl;
	if (y == yr)
		return z2 + xr - x;
	if (x == xl)
		return z3 + yr - y;
	return -1;
}

long long xl_, yl_, xr_, yr_;

void get_min_max(int h_) {
	int h, i, i_, pierced;

	xl_ = INF, xr_ = -1, yl_ = INF, yr_ = -1;
	for (i = 0; i < n0; i++) {
		i_ = ii0[i], pierced = 0;
		for (h = 0; h < h_; h++) {
			long long z = idx(xx[h], yy[h]);

			if (ll[i_] <= z && z <= rr[i_] || ll[i_] <= z4 + z && z4 + z <= rr[i_]) {
				pierced = 1;
				break;
			}
		}
		if (!pierced)
			xl_ = min(xl_, xxr[i]), xr_ = max(xr_, xxl[i]), yl_ = min(yl_, yyr[i]), yr_ = max(yr_, yyl[i]);
	}
	for (i = 0; i < n1; i++) {
		i_ = ii1[i], pierced = 0;
		for (h = 0; h < h_; h++)
			if (ll[i_] <= xx[h] && xx[h] <= rr[i_]) {
				pierced = 1;
				break;
			}
		if (!pierced)
			xl_ = min(xl_, xxr[i]), xr_ = max(xr_, xxl[i]), yl_ = min(yl_, yyr[i]), yr_ = max(yr_, yyl[i]);
	}
	for (i = 0; i < n2; i++) {
		i_ = ii2[i], pierced = 0;
		for (h = 0; h < h_; h++)
			if (ll[i_] <= yy[h] && yy[h] <= rr[i_]) {
				pierced = 1;
				break;
			}
		if (!pierced)
			xl_ = min(xl_, xxr[i]), xr_ = max(xr_, xxl[i]), yl_ = min(yl_, yyr[i]), yr_ = max(yr_, yyl[i]);
	}
}

void solve_(int h_) {
	int h, i;

	if (h_ > 0 && idx(xx[h_ - 1], yy[h_ - 1]) == -1)
		return;
	get_min_max(h_);
	if (xl_ == INF) {
		for (h = h_; h < k; h++)
			xx[h] = 1, yy[h] = 1;
		for (h = 0; h < k; h++)
			printf("%lld %lld\n", xx[h], yy[h]);
		exit(0);
	} else {
		if (h_ == 0) {
			xx[h_] = xl_;
			for (i = 0; i < n; i++)
				yy[h_] = yyl[i], solve_(h_ + 1);
		} else {
			xx[h_] = xl_, yy[h_] = yl_, solve_(h_ + 1);
			xx[h_] = xl_, yy[h_] = yr_, solve_(h_ + 1);
			xx[h_] = xr_, yy[h_] = yl_, solve_(h_ + 1);
			xx[h_] = xr_, yy[h_] = yr_, solve_(h_ + 1);
		}
	}
}

int main() {
	int i;
	long long l, r;

	scanf("%d%d", &n, &k);
	for (i = 0; i < n; i++)
		scanf("%lld%lld%lld%lld", &xxl[i], &yyl[i], &xxr[i], &yyr[i]);
	solve(0);
	xl = INF, xr = -1, yl = INF, yr = -1;
	for (i = 0; i < n; i++)
		xl = min(xl, xxr[i]), xr = max(xr, xxl[i]), yl = min(yl, yyr[i]), yr = max(yr, yyl[i]);
	assert(k == 4 && xl < xr && yl < yr);
	z1 = xr - xl, z2 = z1 + yr - yl, z3 = z2 + xr - xl, z4 = z3 + yr - yl;
	for (i = 0; i < n; i++)
		xxl[i] = max(xxl[i], xl), xxr[i] = min(xxr[i], xr), yyl[i] = max(yyl[i], yl), yyr[i] = min(yyr[i], yr);
	for (i = 0; i < n; i++)
		if (xl < xxl[i] && xxr[i] < xr && yyl[i] == yl && yyr[i] == yr)
			ll[i] = xxl[i], rr[i] = xxr[i], ii1[n1++] = i;
		else if (yl < yyl[i] && yyr[i] < yr && xxl[i] == xl && xxr[i] == xr)
			ll[i] = yyl[i], rr[i] = yyr[i], ii2[n2++] = i;
		else {
			l = INF, r = -1;
			if (yyl[i] == yl) {
				l = min(l, xxl[i] - xl), r = max(r, xxr[i] - xl);
				if (xxl[i] == xl)
					l += z4, r += z4;
			}
			if (xxr[i] == xr)
				l = min(l, z1 + yyl[i] - yl), r = max(r, z1 + yyr[i] - yl);
			if (yyr[i] == yr)
				l = min(l, z2 + xr - xxr[i]), r = max(r, z2 + xr - xxl[i]);
			if (xxl[i] == xl)
				l = min(l, z3 + yr - yyr[i]), r = max(r, z3 + yr - yyl[i]);
			ll[i] = l, rr[i] = r, ii0[n0++] = i;
		}
	solve_(0);
	return 0;
}

Compilation message

hamburg.c: In function 'get_min_max':
hamburg.c:70:20: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   70 |    if (ll[i_] <= z && z <= rr[i_] || ll[i_] <= z4 + z && z4 + z <= rr[i_]) {
      |        ~~~~~~~~~~~~^~~~~~~~~~~~~~
hamburg.c: In function 'main':
hamburg.c:130:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  130 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
hamburg.c:132:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  132 |   scanf("%lld%lld%lld%lld", &xxl[i], &yyl[i], &xxr[i], &yyr[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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

Subtask #3
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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 3 ms 340 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 9 ms 340 KB Output is correct
14 Incorrect 45 ms 376 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 1 ms 340 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 77 ms 6452 KB Output is correct
6 Correct 79 ms 6476 KB Output is correct
7 Correct 73 ms 6428 KB Output is correct
8 Correct 73 ms 6456 KB Output is correct

Subtask #6
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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 76 ms 6532 KB Output is correct
6 Correct 80 ms 6476 KB Output is correct
7 Correct 76 ms 6504 KB Output is correct
8 Correct 86 ms 6416 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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 3 ms 340 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 78 ms 6516 KB Output is correct
14 Correct 82 ms 6536 KB Output is correct
15 Correct 79 ms 6412 KB Output is correct
16 Correct 77 ms 6476 KB Output is correct
17 Correct 81 ms 6532 KB Output is correct
18 Correct 80 ms 6476 KB Output is correct
19 Correct 80 ms 6488 KB Output is correct
20 Correct 96 ms 6416 KB Output is correct
21 Correct 243 ms 6604 KB Output is correct
22 Correct 157 ms 6476 KB Output is correct
23 Correct 133 ms 6516 KB Output is correct
24 Correct 141 ms 6476 KB Output is correct

Subtask #8
0 / 79.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 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 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 9 ms 340 KB Output is correct
14 Incorrect 45 ms 376 KB Unexpected end of file - int32 expected
15 Halted 0 ms 0 KB -