oj.uz

Submission #684311

# Submission time Handle Problem Language Result Execution time Memory
684311 2023-01-20T21:34:03 Z rainboy Cultivation (JOI17_cultivation) C
80 / 100
 2000 ms 2252 KB 
#include <stdio.h>
#include <string.h>
 
#define N	512
#define N2	(N * 2)
#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:54:30: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   54 |   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:122:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  122 |  scanf("%lld%lld%d", &x_, &y_, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c:124:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  124 |   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 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 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 1 ms 296 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 424 KB Output is correct
9 Correct 0 ms 292 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 292 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 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 1 ms 296 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 424 KB Output is correct
9 Correct 0 ms 292 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 292 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 11 ms 732 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 7 ms 548 KB Output is correct
22 Correct 65 ms 1032 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 224 ms 1516 KB Output is correct
25 Correct 106 ms 1188 KB Output is correct
26 Correct 646 ms 2136 KB Output is correct
27 Correct 579 ms 2132 KB Output is correct
28 Correct 223 ms 1632 KB Output is correct
29 Correct 574 ms 2116 KB Output is correct
30 Correct 571 ms 2132 KB Output is correct
31 Correct 619 ms 2132 KB Output is correct
32 Correct 568 ms 2132 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 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 1 ms 296 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 424 KB Output is correct
9 Correct 0 ms 292 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 292 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 11 ms 732 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 7 ms 548 KB Output is correct
22 Correct 65 ms 1032 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 224 ms 1516 KB Output is correct
25 Correct 106 ms 1188 KB Output is correct
26 Correct 646 ms 2136 KB Output is correct
27 Correct 579 ms 2132 KB Output is correct
28 Correct 223 ms 1632 KB Output is correct
29 Correct 574 ms 2116 KB Output is correct
30 Correct 571 ms 2132 KB Output is correct
31 Correct 619 ms 2132 KB Output is correct
32 Correct 568 ms 2132 KB Output is correct
33 Correct 234 ms 2068 KB Output is correct
34 Correct 562 ms 2132 KB Output is correct
35 Correct 645 ms 2252 KB Output is correct
36 Correct 623 ms 2116 KB Output is correct
37 Correct 542 ms 2132 KB Output is correct
38 Correct 614 ms 2132 KB Output is correct
39 Correct 643 ms 2120 KB Output is correct
40 Correct 610 ms 2132 KB Output is correct
41 Correct 349 ms 2132 KB Output is correct
42 Correct 461 ms 2132 KB Output is correct
43 Correct 580 ms 2128 KB Output is correct
44 Correct 601 ms 2132 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 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 3 ms 420 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 1 ms 488 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 2 ms 416 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 420 KB Output is correct
20 Correct 2 ms 416 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 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 3 ms 420 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 1 ms 488 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 2 ms 416 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 420 KB Output is correct
20 Correct 2 ms 416 KB Output is correct
21 Correct 83 ms 920 KB Output is correct
22 Correct 97 ms 928 KB Output is correct
23 Correct 90 ms 932 KB Output is correct
24 Correct 98 ms 852 KB Output is correct
25 Correct 92 ms 928 KB Output is correct
26 Correct 64 ms 852 KB Output is correct
27 Correct 108 ms 916 KB Output is correct
28 Correct 94 ms 912 KB Output is correct
29 Correct 100 ms 932 KB Output is correct
30 Correct 96 ms 920 KB Output is correct
31 Correct 94 ms 912 KB Output is correct
32 Correct 126 ms 916 KB Output is correct
33 Correct 87 ms 912 KB Output is correct
34 Correct 94 ms 916 KB Output is correct
35 Correct 88 ms 916 KB Output is correct
36 Correct 88 ms 936 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 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 1 ms 296 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 424 KB Output is correct
9 Correct 0 ms 292 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 292 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 11 ms 732 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 7 ms 548 KB Output is correct
22 Correct 65 ms 1032 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 224 ms 1516 KB Output is correct
25 Correct 106 ms 1188 KB Output is correct
26 Correct 646 ms 2136 KB Output is correct
27 Correct 579 ms 2132 KB Output is correct
28 Correct 223 ms 1632 KB Output is correct
29 Correct 574 ms 2116 KB Output is correct
30 Correct 571 ms 2132 KB Output is correct
31 Correct 619 ms 2132 KB Output is correct
32 Correct 568 ms 2132 KB Output is correct
33 Correct 234 ms 2068 KB Output is correct
34 Correct 562 ms 2132 KB Output is correct
35 Correct 645 ms 2252 KB Output is correct
36 Correct 623 ms 2116 KB Output is correct
37 Correct 542 ms 2132 KB Output is correct
38 Correct 614 ms 2132 KB Output is correct
39 Correct 643 ms 2120 KB Output is correct
40 Correct 610 ms 2132 KB Output is correct
41 Correct 349 ms 2132 KB Output is correct
42 Correct 461 ms 2132 KB Output is correct
43 Correct 580 ms 2128 KB Output is correct
44 Correct 601 ms 2132 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 2 ms 468 KB Output is correct
47 Correct 2 ms 468 KB Output is correct
48 Correct 3 ms 420 KB Output is correct
49 Correct 2 ms 468 KB Output is correct
50 Correct 2 ms 468 KB Output is correct
51 Correct 1 ms 488 KB Output is correct
52 Correct 2 ms 468 KB Output is correct
53 Correct 2 ms 468 KB Output is correct
54 Correct 2 ms 468 KB Output is correct
55 Correct 2 ms 468 KB Output is correct
56 Correct 2 ms 468 KB Output is correct
57 Correct 2 ms 416 KB Output is correct
58 Correct 2 ms 468 KB Output is correct
59 Correct 2 ms 468 KB Output is correct
60 Correct 2 ms 468 KB Output is correct
61 Correct 2 ms 468 KB Output is correct
62 Correct 2 ms 468 KB Output is correct
63 Correct 2 ms 420 KB Output is correct
64 Correct 2 ms 416 KB Output is correct
65 Correct 83 ms 920 KB Output is correct
66 Correct 97 ms 928 KB Output is correct
67 Correct 90 ms 932 KB Output is correct
68 Correct 98 ms 852 KB Output is correct
69 Correct 92 ms 928 KB Output is correct
70 Correct 64 ms 852 KB Output is correct
71 Correct 108 ms 916 KB Output is correct
72 Correct 94 ms 912 KB Output is correct
73 Correct 100 ms 932 KB Output is correct
74 Correct 96 ms 920 KB Output is correct
75 Correct 94 ms 912 KB Output is correct
76 Correct 126 ms 916 KB Output is correct
77 Correct 87 ms 912 KB Output is correct
78 Correct 94 ms 916 KB Output is correct
79 Correct 88 ms 916 KB Output is correct
80 Correct 88 ms 936 KB Output is correct
81 Correct 960 ms 1572 KB Output is correct
82 Correct 959 ms 1740 KB Output is correct
83 Correct 1356 ms 1824 KB Output is correct
84 Correct 1466 ms 1836 KB Output is correct
85 Execution timed out 2084 ms 2132 KB Time limit exceeded
86 Halted 0 ms 0 KB -