oj.uz

답안 #683161

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
683161 2023-01-17T20:45:36 Z rainboy Cultivation (JOI17_cultivation) C
55 / 100
 2000 ms 340 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], 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], xx1[N2];
	static int qul[N2], qur[N2], quc[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 * 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:152:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  152 |  scanf("%lld%lld%d", &x_, &y_, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c:154:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  154 |   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 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 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 0 ms 212 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 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 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 0 ms 212 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 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 2 ms 212 KB Output is correct
18 Correct 88 ms 316 KB Output is correct
19 Correct 8 ms 212 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 47 ms 328 KB Output is correct
22 Correct 540 ms 316 KB Output is correct
23 Correct 10 ms 212 KB Output is correct
24 Execution timed out 2078 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 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 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 0 ms 212 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 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 2 ms 212 KB Output is correct
18 Correct 88 ms 316 KB Output is correct
19 Correct 8 ms 212 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 47 ms 328 KB Output is correct
22 Correct 540 ms 316 KB Output is correct
23 Correct 10 ms 212 KB Output is correct
24 Execution timed out 2078 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 212 KB Output is correct
2 Correct 6 ms 212 KB Output is correct
3 Correct 6 ms 212 KB Output is correct
4 Correct 6 ms 328 KB Output is correct
5 Correct 7 ms 212 KB Output is correct
6 Correct 7 ms 212 KB Output is correct
7 Correct 6 ms 332 KB Output is correct
8 Correct 9 ms 212 KB Output is correct
9 Correct 6 ms 212 KB Output is correct
10 Correct 7 ms 332 KB Output is correct
11 Correct 6 ms 212 KB Output is correct
12 Correct 6 ms 212 KB Output is correct
13 Correct 4 ms 212 KB Output is correct
14 Correct 5 ms 212 KB Output is correct
15 Correct 6 ms 212 KB Output is correct
16 Correct 7 ms 212 KB Output is correct
17 Correct 6 ms 212 KB Output is correct
18 Correct 7 ms 212 KB Output is correct
19 Correct 6 ms 212 KB Output is correct
20 Correct 6 ms 324 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 212 KB Output is correct
2 Correct 6 ms 212 KB Output is correct
3 Correct 6 ms 212 KB Output is correct
4 Correct 6 ms 328 KB Output is correct
5 Correct 7 ms 212 KB Output is correct
6 Correct 7 ms 212 KB Output is correct
7 Correct 6 ms 332 KB Output is correct
8 Correct 9 ms 212 KB Output is correct
9 Correct 6 ms 212 KB Output is correct
10 Correct 7 ms 332 KB Output is correct
11 Correct 6 ms 212 KB Output is correct
12 Correct 6 ms 212 KB Output is correct
13 Correct 4 ms 212 KB Output is correct
14 Correct 5 ms 212 KB Output is correct
15 Correct 6 ms 212 KB Output is correct
16 Correct 7 ms 212 KB Output is correct
17 Correct 6 ms 212 KB Output is correct
18 Correct 7 ms 212 KB Output is correct
19 Correct 6 ms 212 KB Output is correct
20 Correct 6 ms 324 KB Output is correct
21 Correct 445 ms 316 KB Output is correct
22 Correct 449 ms 328 KB Output is correct
23 Correct 453 ms 316 KB Output is correct
24 Correct 464 ms 316 KB Output is correct
25 Correct 459 ms 212 KB Output is correct
26 Correct 377 ms 320 KB Output is correct
27 Correct 464 ms 312 KB Output is correct
28 Correct 449 ms 320 KB Output is correct
29 Correct 455 ms 316 KB Output is correct
30 Correct 463 ms 316 KB Output is correct
31 Correct 464 ms 316 KB Output is correct
32 Correct 464 ms 312 KB Output is correct
33 Correct 470 ms 316 KB Output is correct
34 Correct 457 ms 316 KB Output is correct
35 Correct 473 ms 312 KB Output is correct
36 Correct 443 ms 316 KB Output is correct

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 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 0 ms 212 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 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 2 ms 212 KB Output is correct
18 Correct 88 ms 316 KB Output is correct
19 Correct 8 ms 212 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 47 ms 328 KB Output is correct
22 Correct 540 ms 316 KB Output is correct
23 Correct 10 ms 212 KB Output is correct
24 Execution timed out 2078 ms 340 KB Time limit exceeded
25 Halted 0 ms 0 KB -