oj.uz

Submission #683169

# Submission time Handle Problem Language Result Execution time Memory
683169 2023-01-17T21:41:40 Z rainboy Cultivation (JOI17_cultivation) C
80 / 100
 2000 ms 1484 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	0x3f3f3f3f
#define LINF	0x3f3f3f3f3f3f3f3fLL

int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
long long min_(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], x_, y_; int ii[N], ii_[N], n;

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;
	}
}

int lll[N][N], rrr[N][N], ccc[N][N];

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

	if (w < 0)
		return LINF;
	for (i = 0; i < n; i++)
		xx_[i << 1 | 0] = xx[i], xx_[i << 1 | 1] = xx[i] + w + 1;
	i = 0, j = 0, k = 0;
	while (i < n || j < n)
		ii_[k++] = j == n || i < n && xx[ii[i]] < xx[ii[j]] + w + 1 ? ii[i++] << 1 | 0 : ii[j++] << 1 | 1;
	m = 0;
	ll[m] = INF, rr[m] = -1, cc[m] = INF, xx1[m] = -LINF, m++;
	for (h = 0, il = ir = 0; h < n * 2; h++) {
		i = ii_[h];
		if ((i & 1) == 0)
			ir++;
		else
			il++;
		if (h + 1 == n * 2 || xx_[ii_[h + 1]] != xx_[ii_[h]]) {
			if (il == ir)
				ll[m] = INF, rr[m] = -1, cc[m] = INF;
			else
				ll[m] = lll[il][ir - 1], rr[m] = rrr[il][ir - 1], cc[m] = ccc[il][ir - 1];
			xx1[m++] = xx_[ii_[h]];
		}
	}
	xx1[m] = LINF;
	ans = LINF;
	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() {
	int k, h, i, j, tmp;
	long long 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;
	sort(ii, 0, n);
	for (i = 0; i < n; i++) {
		k = 0;
		for (j = i; j < n; j++) {
			ii_[k++] = ii[j];
			for (h = k - 1; h > 0 && yy[ii_[h]] < yy[ii_[h - 1]]; h--)
				tmp = ii_[h], ii_[h] = ii_[h - 1], ii_[h - 1] = tmp;
			lll[i][j] = yy[ii_[0]];
			rrr[i][j] = yy[ii_[k - 1]];
			for (h = 1; h < k; h++)
				ccc[i][j] = max(ccc[i][j], yy[ii_[h]] - yy[ii_[h - 1]] - 1);
		}
	}
	ans = LINF;
	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 'solve':
cultivation.c:55:30: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   55 |   ii_[k++] = j == n || i < n && xx[ii[i]] < xx[ii[j]] + w + 1 ? ii[i++] << 1 | 0 : ii[j++] << 1 | 1;
      |                        ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c: In function 'main':
cultivation.c:123:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  123 |  scanf("%lld%lld%d", &x_, &y_, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c:125:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  125 |   scanf("%lld%lld", &xx[i], &yy[i]), xx[i]--, yy[i]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 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 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 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 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 10 ms 468 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 8 ms 468 KB Output is correct
22 Correct 56 ms 724 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 195 ms 980 KB Output is correct
25 Correct 92 ms 824 KB Output is correct
26 Correct 550 ms 1424 KB Output is correct
27 Correct 535 ms 1364 KB Output is correct
28 Correct 178 ms 1008 KB Output is correct
29 Correct 525 ms 1360 KB Output is correct
30 Correct 540 ms 1364 KB Output is correct
31 Correct 550 ms 1364 KB Output is correct
32 Correct 532 ms 1364 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 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 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 10 ms 468 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 8 ms 468 KB Output is correct
22 Correct 56 ms 724 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 195 ms 980 KB Output is correct
25 Correct 92 ms 824 KB Output is correct
26 Correct 550 ms 1424 KB Output is correct
27 Correct 535 ms 1364 KB Output is correct
28 Correct 178 ms 1008 KB Output is correct
29 Correct 525 ms 1360 KB Output is correct
30 Correct 540 ms 1364 KB Output is correct
31 Correct 550 ms 1364 KB Output is correct
32 Correct 532 ms 1364 KB Output is correct
33 Correct 219 ms 1312 KB Output is correct
34 Correct 518 ms 1364 KB Output is correct
35 Correct 564 ms 1364 KB Output is correct
36 Correct 559 ms 1348 KB Output is correct
37 Correct 502 ms 1352 KB Output is correct
38 Correct 538 ms 1364 KB Output is correct
39 Correct 572 ms 1364 KB Output is correct
40 Correct 549 ms 1352 KB Output is correct
41 Correct 323 ms 1364 KB Output is correct
42 Correct 414 ms 1484 KB Output is correct
43 Correct 516 ms 1364 KB Output is correct
44 Correct 551 ms 1364 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 2 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 1 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 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 2 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 1 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 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 81 ms 668 KB Output is correct
22 Correct 90 ms 656 KB Output is correct
23 Correct 83 ms 656 KB Output is correct
24 Correct 80 ms 660 KB Output is correct
25 Correct 86 ms 596 KB Output is correct
26 Correct 59 ms 668 KB Output is correct
27 Correct 92 ms 652 KB Output is correct
28 Correct 88 ms 596 KB Output is correct
29 Correct 80 ms 664 KB Output is correct
30 Correct 88 ms 596 KB Output is correct
31 Correct 88 ms 596 KB Output is correct
32 Correct 89 ms 596 KB Output is correct
33 Correct 81 ms 596 KB Output is correct
34 Correct 87 ms 596 KB Output is correct
35 Correct 76 ms 668 KB Output is correct
36 Correct 76 ms 596 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 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 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 10 ms 468 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 8 ms 468 KB Output is correct
22 Correct 56 ms 724 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 195 ms 980 KB Output is correct
25 Correct 92 ms 824 KB Output is correct
26 Correct 550 ms 1424 KB Output is correct
27 Correct 535 ms 1364 KB Output is correct
28 Correct 178 ms 1008 KB Output is correct
29 Correct 525 ms 1360 KB Output is correct
30 Correct 540 ms 1364 KB Output is correct
31 Correct 550 ms 1364 KB Output is correct
32 Correct 532 ms 1364 KB Output is correct
33 Correct 219 ms 1312 KB Output is correct
34 Correct 518 ms 1364 KB Output is correct
35 Correct 564 ms 1364 KB Output is correct
36 Correct 559 ms 1348 KB Output is correct
37 Correct 502 ms 1352 KB Output is correct
38 Correct 538 ms 1364 KB Output is correct
39 Correct 572 ms 1364 KB Output is correct
40 Correct 549 ms 1352 KB Output is correct
41 Correct 323 ms 1364 KB Output is correct
42 Correct 414 ms 1484 KB Output is correct
43 Correct 516 ms 1364 KB Output is correct
44 Correct 551 ms 1364 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 2 ms 340 KB Output is correct
47 Correct 3 ms 340 KB Output is correct
48 Correct 2 ms 340 KB Output is correct
49 Correct 2 ms 340 KB Output is correct
50 Correct 2 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 2 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 2 ms 340 KB Output is correct
55 Correct 2 ms 340 KB Output is correct
56 Correct 2 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 2 ms 340 KB Output is correct
62 Correct 2 ms 340 KB Output is correct
63 Correct 2 ms 340 KB Output is correct
64 Correct 2 ms 340 KB Output is correct
65 Correct 81 ms 668 KB Output is correct
66 Correct 90 ms 656 KB Output is correct
67 Correct 83 ms 656 KB Output is correct
68 Correct 80 ms 660 KB Output is correct
69 Correct 86 ms 596 KB Output is correct
70 Correct 59 ms 668 KB Output is correct
71 Correct 92 ms 652 KB Output is correct
72 Correct 88 ms 596 KB Output is correct
73 Correct 80 ms 664 KB Output is correct
74 Correct 88 ms 596 KB Output is correct
75 Correct 88 ms 596 KB Output is correct
76 Correct 89 ms 596 KB Output is correct
77 Correct 81 ms 596 KB Output is correct
78 Correct 87 ms 596 KB Output is correct
79 Correct 76 ms 668 KB Output is correct
80 Correct 76 ms 596 KB Output is correct
81 Correct 907 ms 1084 KB Output is correct
82 Correct 933 ms 1108 KB Output is correct
83 Correct 1276 ms 1200 KB Output is correct
84 Correct 1348 ms 1236 KB Output is correct
85 Execution timed out 2071 ms 1348 KB Time limit exceeded
86 Halted 0 ms 0 KB -