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답안 #774385

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
774385 2023-07-05T17:03:15 Z rainboy Bi-ing Lottery Treekets (CCO22_day2problem1) C
25 / 25
 151 ms 46504 KB 
#include <stdio.h>

#define N	4000
#define MD	1000000007

int vv[N + 1], ff[N + 1], gg[N + 1];

void init() {
	int i;

	ff[0] = gg[0] = 1;
	for (i = 1; i <= N; i++) {
		vv[i] = i == 1 ? 1 : (long long) vv[i - MD % i] * (MD / i + 1) % MD;
		ff[i] = (long long) ff[i - 1] * i % MD;
		gg[i] = (long long) gg[i - 1] * vv[i] % MD;
	}
}

int choose(int n, int k) {
	return (long long) ff[n] * gg[k] % MD * gg[n - k] % MD;
}

int ll[N + 1], rr[N + 1], sz[N + 1], kk[N + 1], sz[N + 1], cc[N + 1], dp[N + 1][N + 1];

void dfs(int i, int d) {
	int l = ll[i], r = rr[i], c, kl, kr, x, y, tmp;

	if (i == 0)
		return;
	dfs(l, 0);
	dfs(r, 1);
	if (d == 1)
		tmp = l, l = r, r = tmp;
	sz[i] = sz[l] + sz[r] + 1, cc[i] = cc[l] + cc[r] + 1 - kk[i];
	for (c = 0; c <= cc[i]; c++) {
		x = 0;
		for (kl = 0; kl <= kk[i]; kl++) {
			kr = kk[i] - kl;
			if (kl <= cc[l] && kr <= cc[r]) {
				y = choose(kk[i], kl);
				if (c <= cc[l] - kl)
					y = (long long) y * dp[l][c + kl] % MD * dp[r][kr] % MD;
				else {
					y = (long long) y * choose(c, cc[l] - kl) % MD;
					if (c < cc[i])
						y = (long long) y * dp[l][cc[l]] % MD * dp[r][c + kk[i] - cc[l]] % MD;
					else {
						y = (long long) y * (c - cc[l] + kl) % MD;
						y = (long long) y * dp[l][cc[l]] % MD * dp[r][cc[r]] % MD;
					}
				}
				x = (x + y) % MD;
			}
			if (c == cc[i]) {
				kr = kk[i] - kl - 1;
				if (kl <= cc[l] && kr <= cc[r]) {
					y = (long long) choose(kk[i], kl) * (kk[i] - kl) % MD;
					y = (long long) y * choose(c, cc[l] - kl) % MD;
					y = (long long) y * dp[l][cc[l]] % MD * dp[r][cc[r]] % MD;
					x = (x + y) % MD;
				}
			}
		}
		dp[i][c] = x;
	}
}

int main() {
	int n, k, i;

	init();
	scanf("%d%d", &n, &k);
	if (k > n) {
		printf("0\n");
		return 0;
	}
	while (k--) {
		scanf("%d", &i);
		kk[i]++;
	}
	for (i = 1; i <= n; i++)
		scanf("%d%d", &ll[i], &rr[i]);
	sz[0] = 0, cc[0] = 0, dp[0][0] = 1;
	dfs(1, 0);
	printf("%d\n", dp[1][0]);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:72:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:78:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |   scanf("%d", &i);
      |   ^~~~~~~~~~~~~~~
Main.c:82:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |   scanf("%d%d", &ll[i], &rr[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 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 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 125 ms 46396 KB Output is correct
2 Correct 69 ms 32480 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 7 ms 14548 KB Output is correct
5 Correct 5 ms 11476 KB Output is correct
6 Correct 9 ms 17116 KB Output is correct
7 Correct 30 ms 22184 KB Output is correct
8 Correct 11 ms 18076 KB Output is correct
9 Correct 25 ms 20980 KB Output is correct
10 Correct 118 ms 45500 KB Output is correct
11 Correct 94 ms 38616 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 93 ms 37980 KB Output is correct
14 Correct 69 ms 29000 KB Output is correct
15 Correct 0 ms 356 KB Output is correct
16 Correct 113 ms 43812 KB Output is correct
17 Correct 86 ms 35344 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 16584 KB Output is correct
2 Correct 7 ms 17108 KB Output is correct
3 Correct 8 ms 16468 KB Output is correct
4 Correct 8 ms 16656 KB Output is correct
5 Correct 7 ms 16496 KB Output is correct
6 Correct 9 ms 16740 KB Output is correct
7 Correct 8 ms 16596 KB Output is correct
8 Correct 8 ms 16676 KB Output is correct
9 Correct 8 ms 16596 KB Output is correct
10 Correct 12 ms 17108 KB Output is correct
11 Correct 9 ms 16680 KB Output is correct
12 Correct 15 ms 18260 KB Output is correct
13 Correct 10 ms 16980 KB Output is correct
14 Correct 8 ms 16736 KB Output is correct
15 Correct 8 ms 16724 KB Output is correct
16 Correct 9 ms 16752 KB Output is correct
17 Correct 7 ms 16520 KB Output is correct
18 Correct 11 ms 17164 KB Output is correct
19 Correct 7 ms 16596 KB Output is correct
20 Correct 4 ms 8404 KB Output is correct
21 Correct 7 ms 15700 KB Output is correct
22 Correct 7 ms 16340 KB Output is correct
23 Correct 8 ms 16268 KB Output is correct
24 Correct 7 ms 16520 KB Output is correct
25 Correct 7 ms 14940 KB Output is correct
26 Correct 7 ms 16368 KB Output is correct
27 Correct 7 ms 15840 KB Output is correct
28 Correct 6 ms 16212 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 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 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 125 ms 46396 KB Output is correct
21 Correct 69 ms 32480 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 7 ms 14548 KB Output is correct
24 Correct 5 ms 11476 KB Output is correct
25 Correct 9 ms 17116 KB Output is correct
26 Correct 30 ms 22184 KB Output is correct
27 Correct 11 ms 18076 KB Output is correct
28 Correct 25 ms 20980 KB Output is correct
29 Correct 118 ms 45500 KB Output is correct
30 Correct 94 ms 38616 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 93 ms 37980 KB Output is correct
33 Correct 69 ms 29000 KB Output is correct
34 Correct 0 ms 356 KB Output is correct
35 Correct 113 ms 43812 KB Output is correct
36 Correct 86 ms 35344 KB Output is correct
37 Correct 7 ms 16584 KB Output is correct
38 Correct 7 ms 17108 KB Output is correct
39 Correct 8 ms 16468 KB Output is correct
40 Correct 8 ms 16656 KB Output is correct
41 Correct 7 ms 16496 KB Output is correct
42 Correct 9 ms 16740 KB Output is correct
43 Correct 8 ms 16596 KB Output is correct
44 Correct 8 ms 16676 KB Output is correct
45 Correct 8 ms 16596 KB Output is correct
46 Correct 12 ms 17108 KB Output is correct
47 Correct 9 ms 16680 KB Output is correct
48 Correct 15 ms 18260 KB Output is correct
49 Correct 10 ms 16980 KB Output is correct
50 Correct 8 ms 16736 KB Output is correct
51 Correct 8 ms 16724 KB Output is correct
52 Correct 9 ms 16752 KB Output is correct
53 Correct 7 ms 16520 KB Output is correct
54 Correct 11 ms 17164 KB Output is correct
55 Correct 7 ms 16596 KB Output is correct
56 Correct 4 ms 8404 KB Output is correct
57 Correct 7 ms 15700 KB Output is correct
58 Correct 7 ms 16340 KB Output is correct
59 Correct 8 ms 16268 KB Output is correct
60 Correct 7 ms 16520 KB Output is correct
61 Correct 7 ms 14940 KB Output is correct
62 Correct 7 ms 16368 KB Output is correct
63 Correct 7 ms 15840 KB Output is correct
64 Correct 6 ms 16212 KB Output is correct
65 Correct 9 ms 15044 KB Output is correct
66 Correct 8 ms 16852 KB Output is correct
67 Correct 7 ms 15376 KB Output is correct
68 Correct 7 ms 16724 KB Output is correct
69 Correct 63 ms 16716 KB Output is correct
70 Correct 25 ms 16640 KB Output is correct
71 Correct 8 ms 16684 KB Output is correct
72 Correct 28 ms 16652 KB Output is correct
73 Correct 7 ms 16468 KB Output is correct
74 Correct 5 ms 11280 KB Output is correct
75 Correct 8 ms 16596 KB Output is correct
76 Correct 123 ms 46368 KB Output is correct
77 Correct 151 ms 46504 KB Output is correct
78 Correct 3 ms 6356 KB Output is correct
79 Correct 70 ms 32932 KB Output is correct
80 Correct 7 ms 17132 KB Output is correct
81 Correct 121 ms 46192 KB Output is correct
82 Correct 7 ms 16468 KB Output is correct
83 Correct 7 ms 16608 KB Output is correct
84 Correct 0 ms 340 KB Output is correct
85 Correct 5 ms 11236 KB Output is correct
86 Correct 5 ms 11156 KB Output is correct
87 Correct 7 ms 16596 KB Output is correct
88 Correct 7 ms 16476 KB Output is correct
89 Correct 8 ms 16608 KB Output is correct
90 Correct 8 ms 16532 KB Output is correct
91 Correct 8 ms 16724 KB Output is correct
92 Correct 8 ms 16724 KB Output is correct
93 Correct 9 ms 16960 KB Output is correct
94 Correct 16 ms 18388 KB Output is correct
95 Correct 19 ms 18808 KB Output is correct
96 Correct 8 ms 16596 KB Output is correct
97 Correct 8 ms 16604 KB Output is correct
98 Correct 8 ms 16596 KB Output is correct
99 Correct 10 ms 16964 KB Output is correct
100 Correct 16 ms 18132 KB Output is correct
101 Correct 15 ms 17800 KB Output is correct
102 Correct 5 ms 10196 KB Output is correct
103 Correct 6 ms 15488 KB Output is correct
104 Correct 7 ms 15940 KB Output is correct