oj.uz

답안 #683157

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
683157 2023-01-17T20:37:01 Z rainboy Cultivation (JOI17_cultivation) C
55 / 100
 2000 ms 468 KB 
#include <stdio.h>
#include <string.h>

#define N	600
#define N_	(1 << 10)	/* N_ = pow2(ceil(log2(N))) */
#define N2	(N * 2 + 5)
#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 X = 12345;

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

long long xx[N], xx_[N2], yy[N], yy_[N], x_, y_; int n;

long long *zz;

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 (zz[ii[j]] == zz[i_])
				j++;
			else if (zz[ii[j]] < zz[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;
	}
}

long long stl[N_ * 2], str[N_ * 2], stc[N_ * 2]; int n_;

void pul(int i) {
	int l = i << 1, r = l | 1;

	stl[i] = min(stl[l], stl[r]);
	str[i] = max(str[l], str[r]);
	stc[i] = max(stc[l], stc[r]);
	if (str[l] != -1 && stl[r] != INF)
		stc[i] = max(stc[i], stl[r] - str[l] - 1);
}

int kk[N];

void update(int i, int x) {
	kk[i] += x;
	if (kk[i] == 0)
		stl[n_ + i] = INF, str[n_ + i] = -1, stc[n_ + i] = 0;
	else
		stl[n_ + i] = yy_[i], str[n_ + i] = yy_[i], stc[n_ + i] = 0;
	i += n_;
	while (i > 1)
		pul(i >>= 1);
}

long long solve(long long w) {
	static int ii[N2];
	static long long ll[N2], rr[N2], cc[N2], qul[N2], qur[N2], quc[N2], xx1[N2];
	int m, h, h_, i, headl, cntl, headr, cntr, headc, cntc;
	long long l, r, c, ans;

	if (w < 0)
		return INF;
	for (i = 0; i < n; i++)
		xx_[i << 1 | 0] = xx[i], xx_[i << 1 | 1] = xx[i] + w + 1;
	for (i = 0; i < n * 2; i++)
		ii[i] = i;
	zz = xx_, sort(ii, 0, n * 2);
	memset(stl, 0x3f, n_ * 2 * sizeof *stl);
	memset(str, -1, n_ * 2 * sizeof *str);
	memset(stc, 0, n_ * 2 * sizeof *stc);
	memset(kk, 0, n_ * 2 * sizeof *kk);
	m = 0;
	ll[m] = INF, rr[m] = -1, cc[m] = INF, xx1[m] = -INF, m++;
	for (h = 0; h < n * 2; h++) {
		i = ii[h];
		if ((i & 1) == 0)
			update(yy[i >> 1], 1);
		else
			update(yy[i >> 1], -1);
		if (h + 1 == n * 2 || xx_[ii[h + 1]] != xx_[ii[h]]) {
			if (stl[1] == INF)
				ll[m] = INF, rr[m] = -1, cc[m] = INF;
			else
				ll[m] = stl[1], rr[m] = str[1], cc[m] = stc[1];
			xx1[m++] = xx_[ii[h]];
		}
	}
	xx1[m] = INF;
	ans = INF;
	l = -1, r = INF, c = 0;
	for (h = 0; h < m; h++) {
		if (xx1[h + 1] <= 0 || x_ <= xx1[h])
			continue;
		l = max(l, ll[h]), r = min(r, rr[h]), c = max(c, cc[h]);
	}
	if (l != INF && r != -1 && c != INF)
		ans = min(ans, w + max(l + y_ - 1 - r, c));
	l = -1, r = INF, c = 0;
	for (h = 0; h < m; h++) {
		if (xx1[h + 1] <= w || w + x_ <= xx1[h])
			continue;
		l = max(l, ll[h]), r = min(r, rr[h]), c = max(c, cc[h]);
	}
	if (l != INF && r != -1 && c != INF)
		ans = min(ans, w + max(l + y_ - 1 - r, c));
	headl = cntl = 0, headr = cntr = 0, headc = cntc = 0;
	for (h = 0, h_ = 0; h < m; h++) {
		while (h_ < m && xx1[h_] < xx1[h] + x_) {
			while (cntl && ll[qul[headl + cntl - 1]] <= ll[h_])
				cntl--;
			qul[headl + cntl++] = h_;
			while (cntr && rr[qur[headr + cntr - 1]] >= rr[h_])
				cntr--;
			qur[headr + cntr++] = h_;
			while (cntc && cc[quc[headc + cntc - 1]] <= cc[h_])
				cntc--;
			quc[headc + cntc++] = h_;
			h_++;
		}
		if (xx1[h] >= 0 && xx1[h] <= w) {
			l = ll[qul[headl]], r = rr[qur[headr]], c = cc[quc[headc]];
			if (l != INF && r != -1 && c != INF)
				ans = min(ans, w + max(l + y_ - 1 - r, c));
		}
		if (qul[headl] == h)
			headl++, cntl--;
		if (qur[headr] == h)
			headr++, cntr--;
		if (quc[headc] == h)
			headc++, cntc--;
	}
	return ans;
}

int main() {
	static int ii[N];
	int h, i, j;
	long long y, ans;

	scanf("%lld%lld%d", &x_, &y_, &n);
	for (i = 0; i < n; i++)
		scanf("%lld%lld", &xx[i], &yy[i]), xx[i]--, yy[i]--;
	for (i = 0; i < n; i++)
		ii[i] = i;
	zz = yy, sort(ii, 0, n);
	n_ = 0;
	for (h = 0; h < n; h++) {
		i = ii[h], y = yy[i];
		if (n_ == 0 || yy_[n_ - 1] != y)
			yy_[n_++] = y;
		yy[i] = n_ - 1;
	}
	n_ = 1;
	while (n_ < n)
		n_ <<= 1;
	ans = INF;
	for (i = 0; i < n; i++)
		for (j = 0; j < n; j++)
			ans = min(ans, min(solve((x_ - 1 - xx[i]) + (xx[j] - 0)), solve(xx[j] - xx[i] - 1)));
	printf("%lld\n", ans);
	return 0;
}

Compilation message

cultivation.c: In function 'main':
cultivation.c:151:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  151 |  scanf("%lld%lld%d", &x_, &y_, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c:153:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  153 |   scanf("%lld%lld", &xx[i], &yy[i]), xx[i]--, yy[i]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 87 ms 340 KB Output is correct
19 Correct 7 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 44 ms 340 KB Output is correct
22 Correct 542 ms 340 KB Output is correct
23 Correct 10 ms 340 KB Output is correct
24 Execution timed out 2068 ms 340 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 87 ms 340 KB Output is correct
19 Correct 7 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 44 ms 340 KB Output is correct
22 Correct 542 ms 340 KB Output is correct
23 Correct 10 ms 340 KB Output is correct
24 Execution timed out 2068 ms 340 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 8 ms 348 KB Output is correct
3 Correct 7 ms 340 KB Output is correct
4 Correct 6 ms 340 KB Output is correct
5 Correct 7 ms 348 KB Output is correct
6 Correct 6 ms 340 KB Output is correct
7 Correct 7 ms 348 KB Output is correct
8 Correct 8 ms 340 KB Output is correct
9 Correct 7 ms 348 KB Output is correct
10 Correct 6 ms 340 KB Output is correct
11 Correct 6 ms 344 KB Output is correct
12 Correct 7 ms 348 KB Output is correct
13 Correct 5 ms 340 KB Output is correct
14 Correct 6 ms 340 KB Output is correct
15 Correct 6 ms 340 KB Output is correct
16 Correct 8 ms 340 KB Output is correct
17 Correct 7 ms 468 KB Output is correct
18 Correct 6 ms 340 KB Output is correct
19 Correct 7 ms 340 KB Output is correct
20 Correct 7 ms 348 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 8 ms 348 KB Output is correct
3 Correct 7 ms 340 KB Output is correct
4 Correct 6 ms 340 KB Output is correct
5 Correct 7 ms 348 KB Output is correct
6 Correct 6 ms 340 KB Output is correct
7 Correct 7 ms 348 KB Output is correct
8 Correct 8 ms 340 KB Output is correct
9 Correct 7 ms 348 KB Output is correct
10 Correct 6 ms 340 KB Output is correct
11 Correct 6 ms 344 KB Output is correct
12 Correct 7 ms 348 KB Output is correct
13 Correct 5 ms 340 KB Output is correct
14 Correct 6 ms 340 KB Output is correct
15 Correct 6 ms 340 KB Output is correct
16 Correct 8 ms 340 KB Output is correct
17 Correct 7 ms 468 KB Output is correct
18 Correct 6 ms 340 KB Output is correct
19 Correct 7 ms 340 KB Output is correct
20 Correct 7 ms 348 KB Output is correct
21 Correct 436 ms 348 KB Output is correct
22 Correct 451 ms 364 KB Output is correct
23 Correct 448 ms 352 KB Output is correct
24 Correct 443 ms 348 KB Output is correct
25 Correct 461 ms 356 KB Output is correct
26 Correct 373 ms 340 KB Output is correct
27 Correct 466 ms 364 KB Output is correct
28 Correct 458 ms 344 KB Output is correct
29 Correct 444 ms 344 KB Output is correct
30 Correct 447 ms 340 KB Output is correct
31 Correct 458 ms 356 KB Output is correct
32 Correct 447 ms 340 KB Output is correct
33 Correct 480 ms 460 KB Output is correct
34 Correct 470 ms 348 KB Output is correct
35 Correct 446 ms 340 KB Output is correct
36 Correct 462 ms 348 KB Output is correct

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 87 ms 340 KB Output is correct
19 Correct 7 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 44 ms 340 KB Output is correct
22 Correct 542 ms 340 KB Output is correct
23 Correct 10 ms 340 KB Output is correct
24 Execution timed out 2068 ms 340 KB Time limit exceeded
25 Halted 0 ms 0 KB -