oj.uz

답안 #683155

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
683155 2023-01-17T20:34:35 Z rainboy Cultivation (JOI17_cultivation) C
55 / 100
 549 ms 468 KB 
#include <stdio.h>
#include <string.h>

#define N	300
#define N_	(1 << 9)	/* 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], yy[N], yy_[N], xx_[N2], 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 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 212 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 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 212 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 2 ms 340 KB Output is correct
18 Correct 93 ms 316 KB Output is correct
19 Correct 7 ms 336 KB Output is correct
20 Correct 2 ms 212 KB Output is correct
21 Correct 43 ms 212 KB Output is correct
22 Correct 549 ms 320 KB Output is correct
23 Correct 9 ms 336 KB Output is correct
24 Runtime error 1 ms 468 KB Execution killed with signal 6
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 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 212 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 2 ms 340 KB Output is correct
18 Correct 93 ms 316 KB Output is correct
19 Correct 7 ms 336 KB Output is correct
20 Correct 2 ms 212 KB Output is correct
21 Correct 43 ms 212 KB Output is correct
22 Correct 549 ms 320 KB Output is correct
23 Correct 9 ms 336 KB Output is correct
24 Runtime error 1 ms 468 KB Execution killed with signal 6
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 6 ms 336 KB Output is correct
3 Correct 6 ms 340 KB Output is correct
4 Correct 7 ms 332 KB Output is correct
5 Correct 7 ms 292 KB Output is correct
6 Correct 6 ms 340 KB Output is correct
7 Correct 5 ms 340 KB Output is correct
8 Correct 6 ms 340 KB Output is correct
9 Correct 6 ms 336 KB Output is correct
10 Correct 7 ms 340 KB Output is correct
11 Correct 6 ms 288 KB Output is correct
12 Correct 6 ms 340 KB Output is correct
13 Correct 4 ms 340 KB Output is correct
14 Correct 5 ms 212 KB Output is correct
15 Correct 6 ms 332 KB Output is correct
16 Correct 6 ms 336 KB Output is correct
17 Correct 6 ms 340 KB Output is correct
18 Correct 7 ms 388 KB Output is correct
19 Correct 6 ms 340 KB Output is correct
20 Correct 6 ms 340 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 6 ms 336 KB Output is correct
3 Correct 6 ms 340 KB Output is correct
4 Correct 7 ms 332 KB Output is correct
5 Correct 7 ms 292 KB Output is correct
6 Correct 6 ms 340 KB Output is correct
7 Correct 5 ms 340 KB Output is correct
8 Correct 6 ms 340 KB Output is correct
9 Correct 6 ms 336 KB Output is correct
10 Correct 7 ms 340 KB Output is correct
11 Correct 6 ms 288 KB Output is correct
12 Correct 6 ms 340 KB Output is correct
13 Correct 4 ms 340 KB Output is correct
14 Correct 5 ms 212 KB Output is correct
15 Correct 6 ms 332 KB Output is correct
16 Correct 6 ms 336 KB Output is correct
17 Correct 6 ms 340 KB Output is correct
18 Correct 7 ms 388 KB Output is correct
19 Correct 6 ms 340 KB Output is correct
20 Correct 6 ms 340 KB Output is correct
21 Correct 463 ms 340 KB Output is correct
22 Correct 451 ms 340 KB Output is correct
23 Correct 439 ms 340 KB Output is correct
24 Correct 474 ms 340 KB Output is correct
25 Correct 457 ms 416 KB Output is correct
26 Correct 371 ms 340 KB Output is correct
27 Correct 465 ms 340 KB Output is correct
28 Correct 455 ms 340 KB Output is correct
29 Correct 451 ms 340 KB Output is correct
30 Correct 489 ms 340 KB Output is correct
31 Correct 453 ms 340 KB Output is correct
32 Correct 478 ms 332 KB Output is correct
33 Correct 463 ms 340 KB Output is correct
34 Correct 443 ms 324 KB Output is correct
35 Correct 445 ms 320 KB Output is correct
36 Correct 447 ms 340 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 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 212 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 2 ms 340 KB Output is correct
18 Correct 93 ms 316 KB Output is correct
19 Correct 7 ms 336 KB Output is correct
20 Correct 2 ms 212 KB Output is correct
21 Correct 43 ms 212 KB Output is correct
22 Correct 549 ms 320 KB Output is correct
23 Correct 9 ms 336 KB Output is correct
24 Runtime error 1 ms 468 KB Execution killed with signal 6
25 Halted 0 ms 0 KB -