oj.uz

Submission #683183

# Submission time Handle Problem Language Result Execution time Memory
683183 2023-01-17T22:03:49 Z rainboy Cultivation (JOI17_cultivation) C
80 / 100
 2000 ms 1420 KB 
#include <stdio.h>
#include <string.h>
 
#define N	300
#define N2	(N * 2 + 5)
#define INF	0x7fffffff
#define LINF	0xffffffff
 
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
unsigned int min_(unsigned int a, unsigned int b) { return a < b ? a : b; }
 
unsigned int X = 12345;
 
int rand_() {
	return (X *= 3) >> 1;
}
 
int xx[N], yy[N], ii[N], ii_[N], n, x_, y_; unsigned int xx_[N2];
 
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];
 
unsigned int solve(unsigned int w) {
	static int ii_[N2], ll[N2], rr[N2], cc[N2], qul[N2], qur[N2], quc[N2];
	static unsigned int xx1[N2];
	int m, h, h_, i, il, ir, j, k, l, r, c, headl, cntl, headr, cntr, headc, cntc, ans;
 
	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 && (unsigned int) 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, 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]];
		}
	}
	ans = INF;
	l = -1, r = INF, c = 0;
	for (h = 0; h < m; h++) {
		if (h + 1 < m && xx1[h + 1] <= 0 || h > 0 && (unsigned int) 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, max(l + y_ - 1 - r, c));
	l = -1, r = INF, c = 0;
	for (h = 0; h < m; h++) {
		if (h + 1 < m && xx1[h + 1] <= w || h > 0 && 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, max(l + y_ - 1 - r, c));
	headl = cntl = 0, headr = cntr = 0, headc = cntc = 0;
	for (h = 1, h_ = 1; 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] <= w) {
			l = ll[qul[headl]], r = rr[qur[headr]], c = cc[quc[headc]];
			if (l != INF && r != -1 && c != INF)
				ans = min(ans, 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 == INF ? LINF : ans + w;
}
 
int main() {
	int k, h, i, j, tmp;
	unsigned int ans;
 
	scanf("%d%d%d", &x_, &y_, &n);
	for (i = 0; i < n; i++)
		scanf("%d%d", &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, solve((x_ - 1 - xx[i]) + (xx[j] - 0)));
			if (xx[i] < xx[j])
				ans = min_(ans, solve(xx[j] - xx[i] - 1));
		}
	printf("%u\n", ans);
	return 0;
}

Compilation message

cultivation.c: In function 'solve':
cultivation.c:51:30: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   51 |   ii_[k++] = j == n || i < n && (unsigned int) xx[ii[i]] < xx[ii[j]] + w + 1 ? ii[i++] << 1 | 0 : ii[j++] << 1 | 1;
      |                        ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c:71:17: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   71 |   if (h + 1 < m && xx1[h + 1] <= 0 || h > 0 && (unsigned int) x_ <= xx1[h])
      |       ~~~~~~~~~~^~~~~~~~~~~~~~~~~~
cultivation.c:79:17: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   79 |   if (h + 1 < m && xx1[h + 1] <= w || h > 0 && w + x_ <= xx1[h])
      |       ~~~~~~~~~~^~~~~~~~~~~~~~~~~~
cultivation.c: In function 'main':
cultivation.c:118:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  118 |  scanf("%d%d%d", &x_, &y_, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.c:120:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  120 |   scanf("%d%d", &xx[i], &yy[i]), xx[i]--, yy[i]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 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 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 0 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 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 0 ms 212 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 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 0 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 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 544 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 7 ms 468 KB Output is correct
22 Correct 55 ms 724 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 201 ms 980 KB Output is correct
25 Correct 92 ms 724 KB Output is correct
26 Correct 576 ms 1344 KB Output is correct
27 Correct 588 ms 1336 KB Output is correct
28 Correct 183 ms 996 KB Output is correct
29 Correct 552 ms 1420 KB Output is correct
30 Correct 548 ms 1340 KB Output is correct
31 Correct 573 ms 1340 KB Output is correct
32 Correct 562 ms 1348 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 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 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 0 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 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 544 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 7 ms 468 KB Output is correct
22 Correct 55 ms 724 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 201 ms 980 KB Output is correct
25 Correct 92 ms 724 KB Output is correct
26 Correct 576 ms 1344 KB Output is correct
27 Correct 588 ms 1336 KB Output is correct
28 Correct 183 ms 996 KB Output is correct
29 Correct 552 ms 1420 KB Output is correct
30 Correct 548 ms 1340 KB Output is correct
31 Correct 573 ms 1340 KB Output is correct
32 Correct 562 ms 1348 KB Output is correct
33 Correct 243 ms 1340 KB Output is correct
34 Correct 578 ms 1336 KB Output is correct
35 Correct 579 ms 1356 KB Output is correct
36 Correct 575 ms 1384 KB Output is correct
37 Correct 522 ms 1336 KB Output is correct
38 Correct 586 ms 1340 KB Output is correct
39 Correct 558 ms 1336 KB Output is correct
40 Correct 591 ms 1344 KB Output is correct
41 Correct 354 ms 1416 KB Output is correct
42 Correct 435 ms 1344 KB Output is correct
43 Correct 542 ms 1356 KB Output is correct
44 Correct 581 ms 1340 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 2 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 3 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 2 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 3 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 79 ms 596 KB Output is correct
22 Correct 83 ms 648 KB Output is correct
23 Correct 80 ms 596 KB Output is correct
24 Correct 78 ms 644 KB Output is correct
25 Correct 88 ms 660 KB Output is correct
26 Correct 56 ms 648 KB Output is correct
27 Correct 86 ms 644 KB Output is correct
28 Correct 83 ms 596 KB Output is correct
29 Correct 80 ms 596 KB Output is correct
30 Correct 84 ms 648 KB Output is correct
31 Correct 89 ms 644 KB Output is correct
32 Correct 84 ms 596 KB Output is correct
33 Correct 80 ms 644 KB Output is correct
34 Correct 105 ms 644 KB Output is correct
35 Correct 73 ms 644 KB Output is correct
36 Correct 76 ms 644 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 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 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 0 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 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 544 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 7 ms 468 KB Output is correct
22 Correct 55 ms 724 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 201 ms 980 KB Output is correct
25 Correct 92 ms 724 KB Output is correct
26 Correct 576 ms 1344 KB Output is correct
27 Correct 588 ms 1336 KB Output is correct
28 Correct 183 ms 996 KB Output is correct
29 Correct 552 ms 1420 KB Output is correct
30 Correct 548 ms 1340 KB Output is correct
31 Correct 573 ms 1340 KB Output is correct
32 Correct 562 ms 1348 KB Output is correct
33 Correct 243 ms 1340 KB Output is correct
34 Correct 578 ms 1336 KB Output is correct
35 Correct 579 ms 1356 KB Output is correct
36 Correct 575 ms 1384 KB Output is correct
37 Correct 522 ms 1336 KB Output is correct
38 Correct 586 ms 1340 KB Output is correct
39 Correct 558 ms 1336 KB Output is correct
40 Correct 591 ms 1344 KB Output is correct
41 Correct 354 ms 1416 KB Output is correct
42 Correct 435 ms 1344 KB Output is correct
43 Correct 542 ms 1356 KB Output is correct
44 Correct 581 ms 1340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 2 ms 340 KB Output is correct
47 Correct 2 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 3 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 79 ms 596 KB Output is correct
66 Correct 83 ms 648 KB Output is correct
67 Correct 80 ms 596 KB Output is correct
68 Correct 78 ms 644 KB Output is correct
69 Correct 88 ms 660 KB Output is correct
70 Correct 56 ms 648 KB Output is correct
71 Correct 86 ms 644 KB Output is correct
72 Correct 83 ms 596 KB Output is correct
73 Correct 80 ms 596 KB Output is correct
74 Correct 84 ms 648 KB Output is correct
75 Correct 89 ms 644 KB Output is correct
76 Correct 84 ms 596 KB Output is correct
77 Correct 80 ms 644 KB Output is correct
78 Correct 105 ms 644 KB Output is correct
79 Correct 73 ms 644 KB Output is correct
80 Correct 76 ms 644 KB Output is correct
81 Correct 877 ms 1072 KB Output is correct
82 Correct 881 ms 1080 KB Output is correct
83 Correct 1230 ms 1184 KB Output is correct
84 Correct 1288 ms 1180 KB Output is correct
85 Execution timed out 2073 ms 1236 KB Time limit exceeded
86 Halted 0 ms 0 KB -