oj.uz

Submission #544760

# Submission time Handle Problem Language Result Execution time Memory
544760 2022-04-02T16:30:54 Z rainboy The short shank; Redemption (BOI21_prison) C
100 / 100
 566 ms 219752 KB 
/* upsolve after reading spoiler */
#include <stdio.h>
#include <stdlib.h>

#define N	2000000

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

void append(int **ej, int *eo, int i, int j) {
	int o = eo[i]++;

	if (o >= 2 && (o & o - 1) == 0)
		ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
	ej[i][o] = j;
}

int main() {
	static int *ej[N], eo[N], *fj[N], fo[N];
	static int aa[N], qu[N], pp[N], dd[N], jj[N];
	static char passive[N];
	int n, k, t, i, j, d, o, cnt, ans;

	scanf("%d%d%d", &n, &k, &t);
	for (i = 0, j = -1; i < n; i++) {
		scanf("%d", &aa[i]);
		j = max(j, i + t - aa[i]);
		if (aa[i] > t && j >= i)
			passive[i] = 1;
	}
	cnt = 0, ans = n;
	for (i = n - 1; i >= 0; i--)
		if (passive[i]) {
			pp[i] = cnt == 0 ? -1 : qu[cnt - 1];
			qu[cnt++] = i;
		} else {
			pp[i] = -2;
			if (aa[i] > t)
				ans--;
			else
				while (cnt && qu[cnt - 1] <= i + t - aa[i])
					cnt--;
		}
	for (i = 0; i < n; i++)
		ej[i] = (int *) malloc(2 * sizeof *ej[i]);
	for (i = 0; i < n; i++)
		if (pp[i] >= 0)
			append(ej, eo, pp[i], i);
	for (i = 0; i < n; i++)
		for (o = eo[i]; o--; ) {
			j = ej[i][o];
			if (dd[i] < dd[j] + 1)
				dd[i] = dd[j] + 1, jj[i] = j;
		}
	for (i = 0; i < n; i++)
		fj[i] = (int *) malloc(2 * sizeof *fj[i]);
	for (i = 0; i < n; i++)
		if (pp[i] == -1)
			append(fj, fo, dd[i], i);
	d = n - 1;
	while (k--) {
		while (d >= 0 && fo[d] == 0)
			d--;
		if (d < 0)
			break;
		i = fj[d][--fo[d]], ans -= d + 1;
		while (dd[i] > 0) {
			for (o = eo[i]; o--; ) {
				j = ej[i][o];
				if (j != jj[i])
					append(fj, fo, dd[j], j);
			}
			i = jj[i];
		}
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message

prison.c: In function 'append':
prison.c:12:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   12 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
prison.c: In function 'main':
prison.c:23:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  scanf("%d%d%d", &n, &k, &t);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
prison.c:25:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 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 428 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 145 ms 55148 KB Output is correct
3 Correct 116 ms 55132 KB Output is correct
4 Correct 115 ms 53816 KB Output is correct
5 Correct 100 ms 51848 KB Output is correct
6 Correct 110 ms 52872 KB Output is correct
7 Correct 121 ms 55624 KB Output is correct
8 Correct 121 ms 54336 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 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 428 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 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 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 424 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 424 KB Output is correct
23 Correct 1 ms 724 KB Output is correct
24 Correct 2 ms 724 KB Output is correct
25 Correct 1 ms 732 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 2 ms 724 KB Output is correct
29 Correct 2 ms 724 KB Output is correct
30 Correct 1 ms 724 KB Output is correct
31 Correct 1 ms 724 KB Output is correct
32 Correct 1 ms 724 KB Output is correct
33 Correct 1 ms 692 KB Output is correct
34 Correct 1 ms 692 KB Output is correct
35 Correct 6 ms 724 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 19 ms 8620 KB Output is correct
3 Correct 20 ms 8612 KB Output is correct
4 Correct 16 ms 8356 KB Output is correct
5 Correct 17 ms 8392 KB Output is correct
6 Correct 16 ms 8396 KB Output is correct
7 Correct 16 ms 8160 KB Output is correct
8 Correct 15 ms 7976 KB Output is correct
9 Correct 16 ms 8488 KB Output is correct
10 Correct 18 ms 7592 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 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 428 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 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 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 424 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 424 KB Output is correct
23 Correct 1 ms 724 KB Output is correct
24 Correct 2 ms 724 KB Output is correct
25 Correct 1 ms 732 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 2 ms 724 KB Output is correct
29 Correct 2 ms 724 KB Output is correct
30 Correct 1 ms 724 KB Output is correct
31 Correct 1 ms 724 KB Output is correct
32 Correct 1 ms 724 KB Output is correct
33 Correct 1 ms 692 KB Output is correct
34 Correct 1 ms 692 KB Output is correct
35 Correct 6 ms 724 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 19 ms 8620 KB Output is correct
38 Correct 20 ms 8612 KB Output is correct
39 Correct 16 ms 8356 KB Output is correct
40 Correct 17 ms 8392 KB Output is correct
41 Correct 16 ms 8396 KB Output is correct
42 Correct 16 ms 8160 KB Output is correct
43 Correct 15 ms 7976 KB Output is correct
44 Correct 16 ms 8488 KB Output is correct
45 Correct 18 ms 7592 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 424 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 692 KB Output is correct
58 Correct 2 ms 692 KB Output is correct
59 Correct 1 ms 724 KB Output is correct
60 Correct 1 ms 724 KB Output is correct
61 Correct 1 ms 688 KB Output is correct
62 Correct 1 ms 724 KB Output is correct
63 Correct 2 ms 724 KB Output is correct
64 Correct 1 ms 724 KB Output is correct
65 Correct 2 ms 696 KB Output is correct
66 Correct 1 ms 724 KB Output is correct
67 Correct 1 ms 724 KB Output is correct
68 Correct 1 ms 724 KB Output is correct
69 Correct 4 ms 692 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 19 ms 8588 KB Output is correct
72 Correct 23 ms 8532 KB Output is correct
73 Correct 16 ms 8264 KB Output is correct
74 Correct 17 ms 8392 KB Output is correct
75 Correct 17 ms 8476 KB Output is correct
76 Correct 15 ms 8080 KB Output is correct
77 Correct 16 ms 8040 KB Output is correct
78 Correct 15 ms 8472 KB Output is correct
79 Correct 20 ms 7660 KB Output is correct
80 Correct 48 ms 8632 KB Output is correct
81 Correct 20 ms 8608 KB Output is correct
82 Correct 19 ms 8624 KB Output is correct
83 Correct 16 ms 8252 KB Output is correct
84 Correct 15 ms 8020 KB Output is correct
85 Correct 18 ms 8492 KB Output is correct
86 Correct 17 ms 8412 KB Output is correct
87 Correct 18 ms 8140 KB Output is correct
88 Correct 15 ms 8324 KB Output is correct
89 Correct 16 ms 8540 KB Output is correct
90 Correct 15 ms 8276 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 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 428 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 145 ms 55148 KB Output is correct
14 Correct 116 ms 55132 KB Output is correct
15 Correct 115 ms 53816 KB Output is correct
16 Correct 100 ms 51848 KB Output is correct
17 Correct 110 ms 52872 KB Output is correct
18 Correct 121 ms 55624 KB Output is correct
19 Correct 121 ms 54336 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 424 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 424 KB Output is correct
31 Correct 1 ms 724 KB Output is correct
32 Correct 2 ms 724 KB Output is correct
33 Correct 1 ms 732 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 724 KB Output is correct
36 Correct 2 ms 724 KB Output is correct
37 Correct 2 ms 724 KB Output is correct
38 Correct 1 ms 724 KB Output is correct
39 Correct 1 ms 724 KB Output is correct
40 Correct 1 ms 724 KB Output is correct
41 Correct 1 ms 692 KB Output is correct
42 Correct 1 ms 692 KB Output is correct
43 Correct 6 ms 724 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 19 ms 8620 KB Output is correct
46 Correct 20 ms 8612 KB Output is correct
47 Correct 16 ms 8356 KB Output is correct
48 Correct 17 ms 8392 KB Output is correct
49 Correct 16 ms 8396 KB Output is correct
50 Correct 16 ms 8160 KB Output is correct
51 Correct 15 ms 7976 KB Output is correct
52 Correct 16 ms 8488 KB Output is correct
53 Correct 18 ms 7592 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 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 1 ms 424 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 1 ms 692 KB Output is correct
66 Correct 2 ms 692 KB Output is correct
67 Correct 1 ms 724 KB Output is correct
68 Correct 1 ms 724 KB Output is correct
69 Correct 1 ms 688 KB Output is correct
70 Correct 1 ms 724 KB Output is correct
71 Correct 2 ms 724 KB Output is correct
72 Correct 1 ms 724 KB Output is correct
73 Correct 2 ms 696 KB Output is correct
74 Correct 1 ms 724 KB Output is correct
75 Correct 1 ms 724 KB Output is correct
76 Correct 1 ms 724 KB Output is correct
77 Correct 4 ms 692 KB Output is correct
78 Correct 1 ms 340 KB Output is correct
79 Correct 19 ms 8588 KB Output is correct
80 Correct 23 ms 8532 KB Output is correct
81 Correct 16 ms 8264 KB Output is correct
82 Correct 17 ms 8392 KB Output is correct
83 Correct 17 ms 8476 KB Output is correct
84 Correct 15 ms 8080 KB Output is correct
85 Correct 16 ms 8040 KB Output is correct
86 Correct 15 ms 8472 KB Output is correct
87 Correct 20 ms 7660 KB Output is correct
88 Correct 48 ms 8632 KB Output is correct
89 Correct 20 ms 8608 KB Output is correct
90 Correct 19 ms 8624 KB Output is correct
91 Correct 16 ms 8252 KB Output is correct
92 Correct 15 ms 8020 KB Output is correct
93 Correct 18 ms 8492 KB Output is correct
94 Correct 17 ms 8412 KB Output is correct
95 Correct 18 ms 8140 KB Output is correct
96 Correct 15 ms 8324 KB Output is correct
97 Correct 16 ms 8540 KB Output is correct
98 Correct 15 ms 8276 KB Output is correct
99 Correct 1 ms 340 KB Output is correct
100 Correct 1 ms 340 KB Output is correct
101 Correct 1 ms 340 KB Output is correct
102 Correct 1 ms 340 KB Output is correct
103 Correct 1 ms 340 KB Output is correct
104 Correct 1 ms 340 KB Output is correct
105 Correct 1 ms 340 KB Output is correct
106 Correct 3 ms 340 KB Output is correct
107 Correct 1 ms 340 KB Output is correct
108 Correct 1 ms 340 KB Output is correct
109 Correct 1 ms 424 KB Output is correct
110 Correct 1 ms 296 KB Output is correct
111 Correct 121 ms 55212 KB Output is correct
112 Correct 118 ms 55052 KB Output is correct
113 Correct 113 ms 53756 KB Output is correct
114 Correct 100 ms 51780 KB Output is correct
115 Correct 106 ms 52904 KB Output is correct
116 Correct 127 ms 55524 KB Output is correct
117 Correct 126 ms 54292 KB Output is correct
118 Correct 1 ms 724 KB Output is correct
119 Correct 2 ms 724 KB Output is correct
120 Correct 1 ms 724 KB Output is correct
121 Correct 2 ms 724 KB Output is correct
122 Correct 2 ms 724 KB Output is correct
123 Correct 1 ms 724 KB Output is correct
124 Correct 2 ms 724 KB Output is correct
125 Correct 1 ms 724 KB Output is correct
126 Correct 5 ms 724 KB Output is correct
127 Correct 1 ms 724 KB Output is correct
128 Correct 1 ms 720 KB Output is correct
129 Correct 1 ms 692 KB Output is correct
130 Correct 1 ms 724 KB Output is correct
131 Correct 1 ms 340 KB Output is correct
132 Correct 19 ms 8524 KB Output is correct
133 Correct 18 ms 8600 KB Output is correct
134 Correct 16 ms 8276 KB Output is correct
135 Correct 17 ms 8396 KB Output is correct
136 Correct 17 ms 8500 KB Output is correct
137 Correct 16 ms 8148 KB Output is correct
138 Correct 19 ms 8020 KB Output is correct
139 Correct 17 ms 8532 KB Output is correct
140 Correct 15 ms 7684 KB Output is correct
141 Correct 19 ms 8644 KB Output is correct
142 Correct 41 ms 8580 KB Output is correct
143 Correct 20 ms 8680 KB Output is correct
144 Correct 18 ms 8276 KB Output is correct
145 Correct 16 ms 8044 KB Output is correct
146 Correct 18 ms 8492 KB Output is correct
147 Correct 26 ms 8296 KB Output is correct
148 Correct 17 ms 8180 KB Output is correct
149 Correct 25 ms 8232 KB Output is correct
150 Correct 17 ms 8556 KB Output is correct
151 Correct 25 ms 8268 KB Output is correct
152 Correct 558 ms 218900 KB Output is correct
153 Correct 522 ms 219324 KB Output is correct
154 Correct 525 ms 219372 KB Output is correct
155 Correct 483 ms 214764 KB Output is correct
156 Correct 471 ms 206788 KB Output is correct
157 Correct 486 ms 207032 KB Output is correct
158 Correct 566 ms 213236 KB Output is correct
159 Correct 504 ms 218192 KB Output is correct
160 Correct 521 ms 219752 KB Output is correct
161 Correct 492 ms 199108 KB Output is correct
162 Correct 498 ms 206176 KB Output is correct