oj.uz

Submission #493305

# Submission time Handle Problem Language Result Execution time Memory
493305 2021-12-10T20:34:40 Z rainboy Izvanzemaljci (COI21_izvanzemaljci) C
26 / 100
 57 ms 5336 KB 
#include <stdio.h>
#include <sys/time.h>

#define N	100000
#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; }

unsigned int Z = 12345;

int rand_() {
	return (Z *= 3) >> 1;
}

long long xx[N], yy[N]; int n;

void solve1(long long *xx_, long long *yy_, long long *ll_) {
	int i;
	long long xmn, xmx, ymn, ymx, l;

	xmn = INF, xmx = -INF, ymn = INF, ymx = -INF;
	for (i = 0; i < n; i++) {
		xmn = min(xmn, xx[i]), xmx = max(xmx, xx[i]);
		ymn = min(ymn, yy[i]), ymx = max(ymx, yy[i]);
	}
	l = max(max(xmx - xmn, ymx - ymn), 1);
	if (ll_[0] > l)
		xx_[0] = xmn, yy_[0] = ymn, ll_[0] = l;
}

void sort(int *ii, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, i_ = ii[l + rand_() % (r - l)], tmp;

		while (j < k)
			if (xx[ii[j]] == xx[i_])
				j++;
			else if (xx[ii[j]] < xx[i_]) {
				tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
			}
		sort(ii, l, i);
		l = k;
	}
}

void solve2(int *ii, int n, long long *xx_, long long *yy_, long long *ll_) {
	static long long yld[N], ylu[N], yrd[N], yru[N];
	int i;
	long long x1_, y1_, l1_, x2_, y2_, l2_;

	for (i = 0; i < n; i++) {
		yld[i] = min(i == 0 ? INF : yld[i - 1], yy[ii[i]]);
		ylu[i] = max(i == 0 ? -INF : ylu[i - 1], yy[ii[i]]);
	}
	for (i = n - 1; i >= 0; i--) {
		yrd[i] = min(i + 1 == n ? INF : yrd[i + 1], yy[ii[i]]);
		yru[i] = max(i + 1 == n ? -INF : yru[i + 1], yy[ii[i]]);
	}
	x1_ = y1_ = x2_ = y2_ = -1, l1_ = l2_ = INF;
	for (i = 0; i + 1 < n; i++)
		if (xx[ii[i]] != xx[ii[i + 1]]) {
			long long x1, y1, l1, x2, y2, l2;

			l1 = max(max(xx[ii[i]] - xx[ii[0]], ylu[i] - yld[i]), 1);
			x1 = xx[ii[i]] - l1, y1 = ylu[i] - l1;
			l2 = max(max(xx[ii[n - 1]] - xx[ii[i + 1]], yru[i + 1] - yrd[i + 1]), 1);
			x2 = xx[ii[i + 1]], y2 = yru[i + 1] - l2;
			if (max(l1_, l2_) > max(l1, l2))
				x1_ = x1, y1_ = y1, l1_ = l1, x2_ = x2, y2_ = y2, l2_ = l2;
		}
	if (max(ll_[0], ll_[1]) > max(l1_, l2_))
		xx_[0] = x1_, yy_[0] = y1_, ll_[0] = l1_, xx_[1] = x2_, yy_[1] = y2_, ll_[1] = l2_;
}

void solve3() {
	xx[0] = yy[0] = n;
}

int main() {
	static int ii[N];
	static long long xx_[3], yy_[3], ll_[3];
	int k, h, i, u;

	scanf("%d%d", &n, &k);
	for (i = 0; i < n; i++)
		scanf("%lld%lld", &xx[i], &yy[i]);
	if (n == 1) {
		printf("%lld %lld 1\n", xx[0], yy[0]);
		if (k == 2)
			printf("%lld %lld 1\n", xx[0] - 2, yy[0] - 2);
		return 0;
	}
	ll_[0] = INF;
	if (k == 1)
		solve1(xx_, yy_, ll_);
	else if (k == 2)
		for (u = 0; u < 2; u++) {
			long long tmp;

			for (i = 0; i < n; i++)
				ii[i] = i;
			sort(ii, 0, n);
			solve2(ii, n, xx_, yy_, ll_);
			for (i = 0; i < n; i++)
				tmp = xx[i], xx[i] = yy[i], yy[i] = tmp;
			for (h = 0; h < k; h++)
				tmp = xx_[h], xx_[h] = yy_[h], yy_[h] = tmp;
		}
	for (h = 0; h < k; h++)
		printf("%lld %lld %lld\n", xx_[h], yy_[h], ll_[h]);
	return 0;
}

Compilation message

izvanzemaljci.c: In function 'main':
izvanzemaljci.c:89:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
izvanzemaljci.c:91:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |   scanf("%lld%lld", &xx[i], &yy[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 26 ms 1820 KB Output is correct
8 Correct 24 ms 1740 KB Output is correct
9 Correct 25 ms 1760 KB Output is correct
10 Correct 25 ms 1728 KB Output is correct
11 Correct 24 ms 1740 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 55 ms 5320 KB Output is correct
11 Correct 55 ms 5316 KB Output is correct
12 Correct 54 ms 5336 KB Output is correct
13 Correct 57 ms 5224 KB Output is correct
14 Correct 56 ms 5316 KB Output is correct
15 Correct 56 ms 5248 KB Output is correct
16 Correct 55 ms 5292 KB Output is correct
17 Correct 57 ms 4924 KB Output is correct
18 Correct 47 ms 4780 KB Output is correct
19 Correct 50 ms 4376 KB Output is correct
20 Correct 45 ms 4604 KB Output is correct
21 Correct 55 ms 5316 KB Output is correct
22 Correct 56 ms 5240 KB Output is correct
23 Correct 55 ms 5316 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Unexpected end of file - int64 expected
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Integer 4557430888798830399 violates the range [1, 2*10^9]
2 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Integer 4557430888798830399 violates the range [1, 2*10^9]
2 Halted 0 ms 0 KB -