oj.uz

Submission #703274

# Submission time Handle Problem Language Result Execution time Memory
703274 2023-02-26T20:11:34 Z rainboy Colouring a rectangle (eJOI19_colouring) C
100 / 100
 155 ms 47600 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	200000
#define M	200000
#define N_	(N + M - 1)

int max(int a, int b) { return a > b ? a : b; }

int *el[N_], *ea[N_], eo[N_];

void append(int r, int l, int a) {
	int o = eo[r]++;

	if (o >= 2 && (o & o - 1) == 0) {
		el[r] = (int *) realloc(el[r], o * 2 * sizeof *el[r]);
		ea[r] = (int *) realloc(ea[r], o * 2 * sizeof *ea[r]);
	}
	el[r][o] = l, ea[r][o] = a;
}

int aa[N_], bb[N_];
int ds[N_], rr[N_]; char marked[N_]; int n, m, n_;

int find(int i) {
	return ds[i] < 0 ? i : (ds[i] = find(ds[i]));
}

void join(int i, int j) {
	i = find(i);
	j = find(j);
	if (i == j)
		return;
	if (ds[i] > ds[j])
		ds[i] = j, rr[j] = max(rr[j], rr[i]);
	else {
		if (ds[i] == ds[j])
			ds[i]--;
		ds[j] = i, rr[i] = max(rr[i], rr[j]);
	}
}

void mark(int i) {
	marked[i] = 1;
	if (i >= 2 && marked[i - 2])
		join(i - 2, i);
	if (i + 2 < n_ && marked[i + 2])
		join(i, i + 2);
}

int nxt(int i) {
	return !marked[i] ? i : rr[find(i)] + 2;
}

int main() {
	int h, l, r, a, o;
	long long ans;

	scanf("%d%d", &n, &m), n_ = n + m - 1;
	for (h = 0; h < n_; h++)
		scanf("%d", &aa[h]);
	for (h = 0; h < n_; h++)
		scanf("%d", &bb[h]);
	for (r = 0; r < n_; r++) {
		el[r] = (int *) malloc(2 * sizeof *el[r]);
		ea[r] = (int *) malloc(2 * sizeof *ea[r]);
	}
	for (h = 0; h < n_; h++) {
		l = h < m ? m - 1 - h : h - m + 1, r = h < n ? m - 1 + h : n_ - 1 + n - 1 - h;
		append(r, l, aa[h]);
	}
	memset(ds, -1, n_ * sizeof *ds);
	for (h = 0; h < n_; h++)
		rr[h] = h;
	ans = 0;
	for (r = 0; r < n_; r++)
		for (o = eo[r]; o--; ) {
			l = el[r][o], a = ea[r][o];
			h = l;
			while ((h = nxt(h)) <= r)
				if (a >= bb[h])
					a -= bb[h], ans += bb[h], bb[h] = 0, mark(h);
				else {
					bb[h] -= a, ans += a;
					break;
				}
		}
	printf("%lld\n", ans);
	return 0;
}

Compilation message

colouring.c: In function 'append':
colouring.c:16:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   16 |  if (o >= 2 && (o & o - 1) == 0) {
      |                     ~~^~~
colouring.c: In function 'main':
colouring.c:60:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |  scanf("%d%d", &n, &m), n_ = n + m - 1;
      |  ^~~~~~~~~~~~~~~~~~~~~
colouring.c:62:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |   scanf("%d", &aa[h]);
      |   ^~~~~~~~~~~~~~~~~~~
colouring.c:64:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |   scanf("%d", &bb[h]);
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 0 ms 340 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 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 292 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 1 ms 296 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 0 ms 340 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 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 292 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 300 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 296 KB Output is correct
29 Correct 0 ms 300 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 0 ms 340 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 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 292 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 300 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 296 KB Output is correct
29 Correct 0 ms 300 KB Output is correct
30 Correct 2 ms 724 KB Output is correct
31 Correct 2 ms 724 KB Output is correct
32 Correct 2 ms 724 KB Output is correct
33 Correct 2 ms 596 KB Output is correct
34 Correct 2 ms 620 KB Output is correct
35 Correct 1 ms 564 KB Output is correct
36 Correct 1 ms 568 KB Output is correct
37 Correct 1 ms 560 KB Output is correct
38 Correct 2 ms 468 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 476 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 1 ms 472 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 23864 KB Output is correct
2 Correct 73 ms 23884 KB Output is correct
3 Correct 67 ms 23864 KB Output is correct
4 Correct 74 ms 24188 KB Output is correct
5 Correct 70 ms 24272 KB Output is correct
6 Correct 70 ms 23368 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 47600 KB Output is correct
2 Correct 138 ms 46752 KB Output is correct
3 Correct 155 ms 46680 KB Output is correct
4 Correct 143 ms 46952 KB Output is correct
5 Correct 135 ms 47032 KB Output is correct
6 Correct 122 ms 44080 KB Output is correct
7 Correct 143 ms 46316 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 0 ms 340 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 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 292 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 300 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 296 KB Output is correct
29 Correct 0 ms 300 KB Output is correct
30 Correct 2 ms 724 KB Output is correct
31 Correct 2 ms 724 KB Output is correct
32 Correct 2 ms 724 KB Output is correct
33 Correct 2 ms 596 KB Output is correct
34 Correct 2 ms 620 KB Output is correct
35 Correct 1 ms 564 KB Output is correct
36 Correct 1 ms 568 KB Output is correct
37 Correct 1 ms 560 KB Output is correct
38 Correct 2 ms 468 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 476 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 1 ms 472 KB Output is correct
43 Correct 72 ms 23864 KB Output is correct
44 Correct 73 ms 23884 KB Output is correct
45 Correct 67 ms 23864 KB Output is correct
46 Correct 74 ms 24188 KB Output is correct
47 Correct 70 ms 24272 KB Output is correct
48 Correct 70 ms 23368 KB Output is correct
49 Correct 141 ms 47600 KB Output is correct
50 Correct 138 ms 46752 KB Output is correct
51 Correct 155 ms 46680 KB Output is correct
52 Correct 143 ms 46952 KB Output is correct
53 Correct 135 ms 47032 KB Output is correct
54 Correct 122 ms 44080 KB Output is correct
55 Correct 143 ms 46316 KB Output is correct
56 Correct 78 ms 23316 KB Output is correct
57 Correct 84 ms 23592 KB Output is correct
58 Correct 69 ms 23884 KB Output is correct
59 Correct 62 ms 22528 KB Output is correct
60 Correct 73 ms 24012 KB Output is correct
61 Correct 71 ms 23832 KB Output is correct
62 Correct 82 ms 22604 KB Output is correct
63 Correct 71 ms 23908 KB Output is correct
64 Correct 71 ms 24132 KB Output is correct
65 Correct 79 ms 25076 KB Output is correct
66 Correct 95 ms 27636 KB Output is correct
67 Correct 95 ms 30300 KB Output is correct
68 Correct 124 ms 44068 KB Output is correct
69 Correct 145 ms 45756 KB Output is correct
70 Correct 126 ms 35336 KB Output is correct