#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 2e5 + 1, MOD = 1e9 + 2022;
class SegmentTree {
private:
struct node {
int rev, sum[2];
node() { rev = 0, sum[0] = sum[1] = 0; }
}tree[maxn << 2];
inline int left(int x) { return x << 1; }
inline int right(int x) { return x << 1 | 1; }
inline void pushup(int pos) {
tree[pos].sum[0] = (tree[left(pos)].sum[0] + tree[right(pos)].sum[0]) % MOD;
tree[pos].sum[1] = (tree[left(pos)].sum[1] + tree[right(pos)].sum[1]) % MOD;
}
inline void reverse(int pos) {
tree[pos].rev ^= 1;
swap(tree[pos].sum[0], tree[pos].sum[1]);
}
inline void pushdown(int pos) {
if (tree[pos].rev) {
reverse(left(pos));
reverse(right(pos));
tree[pos].rev = 0;
}
}
public:
inline void Insert(int u, int s, int k, int l, int r, int pos) {
tree[pos] = node();
if (l == r) {
tree[pos].sum[s] = k;
return;
}
int mid = (l + r) >> 1;
if (u <= mid) Insert(u, s, k, l, mid, left(pos));
if (mid < u) Insert(u, s, k, mid + 1, r, right(pos));
pushup(pos);
}
inline void Modify(int ul, int ur, int l, int r, int pos) {
if (ul <= l && r <= ur) {
reverse(pos);
return;
}
int mid = (l + r) >> 1;
pushdown(pos);
if (ul <= mid) Modify(ul, ur, l, mid, left(pos));
if (mid < ur) Modify(ul, ur, mid + 1, r, right(pos));
pushup(pos);
}
inline int Query() { return tree[1].sum[1]; }
}S;
vector<int> G[maxn];
int n, m, siz[maxn], coef[maxn], prod[maxn];
inline void dfs1(int u) {
if (!siz[u]) {
prod[u] = 1; return;
}
prod[u] = siz[u];
for (int v : G[u]) {
dfs1(v);
prod[u] = (ll)prod[v] * (ll)prod[u] % MOD;
}
}
inline void dfs2(int u, int k) {
coef[u] = k;
if (!siz[u]) return;
vector <int> pre(siz[u]), suf(siz[u]);
pre[0] = prod[G[u][0]];
for (int i = 1; i <= siz[u] - 1; ++i) pre[i] = (ll)prod[G[u][i]] * (ll)pre[i - 1] % MOD;
suf[siz[u] - 1] = prod[G[u][siz[u] - 1]];
for (int i = siz[u] - 2; i >= 0; --i) suf[i] = (ll)prod[G[u][i]] * (ll)suf[i + 1] % MOD;
for (int i = 0; i < siz[u]; ++i) {
int tmp = k;
if (i > 0) tmp = (ll)tmp * (ll)pre[i - 1] % MOD;
if (i < siz[u] - 1) tmp = (ll)tmp * (ll)suf[i + 1] % MOD;
dfs2(G[u][i], tmp);
}
}
void init(int N, int M, vector <int> P, vector <int> A) {
n = N, m = M;
for (int i = 1; i < n + m; ++i) G[P[i]].push_back(i);
for (int i = 0; i < n + m; ++i) siz[i] = G[i].size();
dfs1(0), dfs2(0, 1);
for (int i = 0; i < m; ++i) S.Insert(i + 1, A[i], coef[n + i], 1, m, 1);
}
int count_ways(int L, int R) {
S.Modify(L - n + 1, R - n + 1, 1, m, 1);
return S.Query();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
14288 KB |
Output is correct |
2 |
Correct |
7 ms |
14288 KB |
Output is correct |
3 |
Correct |
7 ms |
14352 KB |
Output is correct |
4 |
Correct |
6 ms |
14416 KB |
Output is correct |
5 |
Correct |
6 ms |
14416 KB |
Output is correct |
6 |
Correct |
6 ms |
14416 KB |
Output is correct |
7 |
Correct |
6 ms |
14416 KB |
Output is correct |
8 |
Correct |
6 ms |
14416 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
14288 KB |
Output is correct |
2 |
Correct |
6 ms |
14416 KB |
Output is correct |
3 |
Correct |
7 ms |
14416 KB |
Output is correct |
4 |
Correct |
7 ms |
14416 KB |
Output is correct |
5 |
Correct |
6 ms |
14372 KB |
Output is correct |
6 |
Correct |
6 ms |
14416 KB |
Output is correct |
7 |
Correct |
6 ms |
14416 KB |
Output is correct |
8 |
Correct |
6 ms |
14416 KB |
Output is correct |
9 |
Correct |
6 ms |
14416 KB |
Output is correct |
10 |
Correct |
6 ms |
14672 KB |
Output is correct |
11 |
Correct |
7 ms |
14580 KB |
Output is correct |
12 |
Correct |
7 ms |
14428 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
14288 KB |
Output is correct |
2 |
Correct |
7 ms |
14288 KB |
Output is correct |
3 |
Correct |
7 ms |
14352 KB |
Output is correct |
4 |
Correct |
6 ms |
14416 KB |
Output is correct |
5 |
Correct |
6 ms |
14416 KB |
Output is correct |
6 |
Correct |
6 ms |
14416 KB |
Output is correct |
7 |
Correct |
6 ms |
14416 KB |
Output is correct |
8 |
Correct |
6 ms |
14416 KB |
Output is correct |
9 |
Correct |
5 ms |
14288 KB |
Output is correct |
10 |
Correct |
6 ms |
14416 KB |
Output is correct |
11 |
Correct |
7 ms |
14416 KB |
Output is correct |
12 |
Correct |
7 ms |
14416 KB |
Output is correct |
13 |
Correct |
6 ms |
14372 KB |
Output is correct |
14 |
Correct |
6 ms |
14416 KB |
Output is correct |
15 |
Correct |
6 ms |
14416 KB |
Output is correct |
16 |
Correct |
6 ms |
14416 KB |
Output is correct |
17 |
Correct |
6 ms |
14416 KB |
Output is correct |
18 |
Correct |
6 ms |
14672 KB |
Output is correct |
19 |
Correct |
7 ms |
14580 KB |
Output is correct |
20 |
Correct |
7 ms |
14428 KB |
Output is correct |
21 |
Correct |
7 ms |
14416 KB |
Output is correct |
22 |
Correct |
6 ms |
14416 KB |
Output is correct |
23 |
Correct |
6 ms |
14416 KB |
Output is correct |
24 |
Correct |
6 ms |
14416 KB |
Output is correct |
25 |
Correct |
6 ms |
14416 KB |
Output is correct |
26 |
Correct |
7 ms |
14416 KB |
Output is correct |
27 |
Correct |
6 ms |
14416 KB |
Output is correct |
28 |
Correct |
7 ms |
14416 KB |
Output is correct |
29 |
Correct |
6 ms |
14416 KB |
Output is correct |
30 |
Correct |
6 ms |
14416 KB |
Output is correct |
31 |
Correct |
6 ms |
14544 KB |
Output is correct |
32 |
Correct |
6 ms |
14472 KB |
Output is correct |
33 |
Correct |
6 ms |
14416 KB |
Output is correct |
34 |
Correct |
7 ms |
14416 KB |
Output is correct |
35 |
Correct |
6 ms |
14416 KB |
Output is correct |
36 |
Correct |
6 ms |
14672 KB |
Output is correct |
37 |
Correct |
7 ms |
14672 KB |
Output is correct |
38 |
Correct |
7 ms |
14688 KB |
Output is correct |
39 |
Correct |
6 ms |
14448 KB |
Output is correct |
40 |
Correct |
6 ms |
14416 KB |
Output is correct |
41 |
Correct |
7 ms |
14372 KB |
Output is correct |
42 |
Correct |
6 ms |
14416 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
579 ms |
16936 KB |
Output is correct |
2 |
Correct |
776 ms |
19400 KB |
Output is correct |
3 |
Correct |
850 ms |
19400 KB |
Output is correct |
4 |
Correct |
764 ms |
19504 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
579 ms |
16936 KB |
Output is correct |
2 |
Correct |
776 ms |
19400 KB |
Output is correct |
3 |
Correct |
850 ms |
19400 KB |
Output is correct |
4 |
Correct |
764 ms |
19504 KB |
Output is correct |
5 |
Correct |
565 ms |
16932 KB |
Output is correct |
6 |
Correct |
797 ms |
19528 KB |
Output is correct |
7 |
Correct |
776 ms |
19500 KB |
Output is correct |
8 |
Correct |
730 ms |
19500 KB |
Output is correct |
9 |
Correct |
413 ms |
14544 KB |
Output is correct |
10 |
Correct |
601 ms |
14640 KB |
Output is correct |
11 |
Correct |
759 ms |
14640 KB |
Output is correct |
12 |
Correct |
604 ms |
14620 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
14288 KB |
Output is correct |
2 |
Correct |
6 ms |
14416 KB |
Output is correct |
3 |
Correct |
7 ms |
14416 KB |
Output is correct |
4 |
Correct |
7 ms |
14416 KB |
Output is correct |
5 |
Correct |
6 ms |
14372 KB |
Output is correct |
6 |
Correct |
6 ms |
14416 KB |
Output is correct |
7 |
Correct |
6 ms |
14416 KB |
Output is correct |
8 |
Correct |
6 ms |
14416 KB |
Output is correct |
9 |
Correct |
6 ms |
14416 KB |
Output is correct |
10 |
Correct |
6 ms |
14672 KB |
Output is correct |
11 |
Correct |
7 ms |
14580 KB |
Output is correct |
12 |
Correct |
7 ms |
14428 KB |
Output is correct |
13 |
Correct |
579 ms |
16936 KB |
Output is correct |
14 |
Correct |
776 ms |
19400 KB |
Output is correct |
15 |
Correct |
850 ms |
19400 KB |
Output is correct |
16 |
Correct |
764 ms |
19504 KB |
Output is correct |
17 |
Correct |
565 ms |
16932 KB |
Output is correct |
18 |
Correct |
797 ms |
19528 KB |
Output is correct |
19 |
Correct |
776 ms |
19500 KB |
Output is correct |
20 |
Correct |
730 ms |
19500 KB |
Output is correct |
21 |
Correct |
413 ms |
14544 KB |
Output is correct |
22 |
Correct |
601 ms |
14640 KB |
Output is correct |
23 |
Correct |
759 ms |
14640 KB |
Output is correct |
24 |
Correct |
604 ms |
14620 KB |
Output is correct |
25 |
Correct |
956 ms |
22072 KB |
Output is correct |
26 |
Correct |
671 ms |
22188 KB |
Output is correct |
27 |
Correct |
927 ms |
22216 KB |
Output is correct |
28 |
Correct |
651 ms |
22172 KB |
Output is correct |
29 |
Correct |
891 ms |
42440 KB |
Output is correct |
30 |
Correct |
713 ms |
42440 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
14288 KB |
Output is correct |
2 |
Correct |
7 ms |
14288 KB |
Output is correct |
3 |
Correct |
7 ms |
14352 KB |
Output is correct |
4 |
Correct |
6 ms |
14416 KB |
Output is correct |
5 |
Correct |
6 ms |
14416 KB |
Output is correct |
6 |
Correct |
6 ms |
14416 KB |
Output is correct |
7 |
Correct |
6 ms |
14416 KB |
Output is correct |
8 |
Correct |
6 ms |
14416 KB |
Output is correct |
9 |
Correct |
5 ms |
14288 KB |
Output is correct |
10 |
Correct |
6 ms |
14416 KB |
Output is correct |
11 |
Correct |
7 ms |
14416 KB |
Output is correct |
12 |
Correct |
7 ms |
14416 KB |
Output is correct |
13 |
Correct |
6 ms |
14372 KB |
Output is correct |
14 |
Correct |
6 ms |
14416 KB |
Output is correct |
15 |
Correct |
6 ms |
14416 KB |
Output is correct |
16 |
Correct |
6 ms |
14416 KB |
Output is correct |
17 |
Correct |
6 ms |
14416 KB |
Output is correct |
18 |
Correct |
6 ms |
14672 KB |
Output is correct |
19 |
Correct |
7 ms |
14580 KB |
Output is correct |
20 |
Correct |
7 ms |
14428 KB |
Output is correct |
21 |
Correct |
7 ms |
14416 KB |
Output is correct |
22 |
Correct |
6 ms |
14416 KB |
Output is correct |
23 |
Correct |
6 ms |
14416 KB |
Output is correct |
24 |
Correct |
6 ms |
14416 KB |
Output is correct |
25 |
Correct |
6 ms |
14416 KB |
Output is correct |
26 |
Correct |
7 ms |
14416 KB |
Output is correct |
27 |
Correct |
6 ms |
14416 KB |
Output is correct |
28 |
Correct |
7 ms |
14416 KB |
Output is correct |
29 |
Correct |
6 ms |
14416 KB |
Output is correct |
30 |
Correct |
6 ms |
14416 KB |
Output is correct |
31 |
Correct |
6 ms |
14544 KB |
Output is correct |
32 |
Correct |
6 ms |
14472 KB |
Output is correct |
33 |
Correct |
6 ms |
14416 KB |
Output is correct |
34 |
Correct |
7 ms |
14416 KB |
Output is correct |
35 |
Correct |
6 ms |
14416 KB |
Output is correct |
36 |
Correct |
6 ms |
14672 KB |
Output is correct |
37 |
Correct |
7 ms |
14672 KB |
Output is correct |
38 |
Correct |
7 ms |
14688 KB |
Output is correct |
39 |
Correct |
6 ms |
14448 KB |
Output is correct |
40 |
Correct |
6 ms |
14416 KB |
Output is correct |
41 |
Correct |
7 ms |
14372 KB |
Output is correct |
42 |
Correct |
6 ms |
14416 KB |
Output is correct |
43 |
Correct |
492 ms |
14556 KB |
Output is correct |
44 |
Correct |
759 ms |
14632 KB |
Output is correct |
45 |
Correct |
730 ms |
14504 KB |
Output is correct |
46 |
Correct |
715 ms |
14760 KB |
Output is correct |
47 |
Correct |
714 ms |
14772 KB |
Output is correct |
48 |
Correct |
735 ms |
14672 KB |
Output is correct |
49 |
Correct |
792 ms |
14772 KB |
Output is correct |
50 |
Correct |
703 ms |
14692 KB |
Output is correct |
51 |
Correct |
604 ms |
14524 KB |
Output is correct |
52 |
Correct |
802 ms |
14512 KB |
Output is correct |
53 |
Correct |
778 ms |
15664 KB |
Output is correct |
54 |
Correct |
778 ms |
14772 KB |
Output is correct |
55 |
Correct |
670 ms |
14672 KB |
Output is correct |
56 |
Correct |
750 ms |
14628 KB |
Output is correct |
57 |
Correct |
685 ms |
14516 KB |
Output is correct |
58 |
Correct |
814 ms |
15800 KB |
Output is correct |
59 |
Correct |
723 ms |
15776 KB |
Output is correct |
60 |
Correct |
671 ms |
15824 KB |
Output is correct |
61 |
Correct |
808 ms |
14768 KB |
Output is correct |
62 |
Correct |
627 ms |
14520 KB |
Output is correct |
63 |
Correct |
637 ms |
14544 KB |
Output is correct |
64 |
Correct |
715 ms |
14512 KB |
Output is correct |
65 |
Correct |
335 ms |
14544 KB |
Output is correct |
66 |
Correct |
737 ms |
14632 KB |
Output is correct |
67 |
Correct |
740 ms |
14664 KB |
Output is correct |
68 |
Correct |
741 ms |
14672 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
14288 KB |
Output is correct |
2 |
Correct |
7 ms |
14288 KB |
Output is correct |
3 |
Correct |
7 ms |
14352 KB |
Output is correct |
4 |
Correct |
6 ms |
14416 KB |
Output is correct |
5 |
Correct |
6 ms |
14416 KB |
Output is correct |
6 |
Correct |
6 ms |
14416 KB |
Output is correct |
7 |
Correct |
6 ms |
14416 KB |
Output is correct |
8 |
Correct |
6 ms |
14416 KB |
Output is correct |
9 |
Correct |
5 ms |
14288 KB |
Output is correct |
10 |
Correct |
6 ms |
14416 KB |
Output is correct |
11 |
Correct |
7 ms |
14416 KB |
Output is correct |
12 |
Correct |
7 ms |
14416 KB |
Output is correct |
13 |
Correct |
6 ms |
14372 KB |
Output is correct |
14 |
Correct |
6 ms |
14416 KB |
Output is correct |
15 |
Correct |
6 ms |
14416 KB |
Output is correct |
16 |
Correct |
6 ms |
14416 KB |
Output is correct |
17 |
Correct |
6 ms |
14416 KB |
Output is correct |
18 |
Correct |
6 ms |
14672 KB |
Output is correct |
19 |
Correct |
7 ms |
14580 KB |
Output is correct |
20 |
Correct |
7 ms |
14428 KB |
Output is correct |
21 |
Correct |
7 ms |
14416 KB |
Output is correct |
22 |
Correct |
6 ms |
14416 KB |
Output is correct |
23 |
Correct |
6 ms |
14416 KB |
Output is correct |
24 |
Correct |
6 ms |
14416 KB |
Output is correct |
25 |
Correct |
6 ms |
14416 KB |
Output is correct |
26 |
Correct |
7 ms |
14416 KB |
Output is correct |
27 |
Correct |
6 ms |
14416 KB |
Output is correct |
28 |
Correct |
7 ms |
14416 KB |
Output is correct |
29 |
Correct |
6 ms |
14416 KB |
Output is correct |
30 |
Correct |
6 ms |
14416 KB |
Output is correct |
31 |
Correct |
6 ms |
14544 KB |
Output is correct |
32 |
Correct |
6 ms |
14472 KB |
Output is correct |
33 |
Correct |
6 ms |
14416 KB |
Output is correct |
34 |
Correct |
7 ms |
14416 KB |
Output is correct |
35 |
Correct |
6 ms |
14416 KB |
Output is correct |
36 |
Correct |
6 ms |
14672 KB |
Output is correct |
37 |
Correct |
7 ms |
14672 KB |
Output is correct |
38 |
Correct |
7 ms |
14688 KB |
Output is correct |
39 |
Correct |
6 ms |
14448 KB |
Output is correct |
40 |
Correct |
6 ms |
14416 KB |
Output is correct |
41 |
Correct |
7 ms |
14372 KB |
Output is correct |
42 |
Correct |
6 ms |
14416 KB |
Output is correct |
43 |
Correct |
579 ms |
16936 KB |
Output is correct |
44 |
Correct |
776 ms |
19400 KB |
Output is correct |
45 |
Correct |
850 ms |
19400 KB |
Output is correct |
46 |
Correct |
764 ms |
19504 KB |
Output is correct |
47 |
Correct |
565 ms |
16932 KB |
Output is correct |
48 |
Correct |
797 ms |
19528 KB |
Output is correct |
49 |
Correct |
776 ms |
19500 KB |
Output is correct |
50 |
Correct |
730 ms |
19500 KB |
Output is correct |
51 |
Correct |
413 ms |
14544 KB |
Output is correct |
52 |
Correct |
601 ms |
14640 KB |
Output is correct |
53 |
Correct |
759 ms |
14640 KB |
Output is correct |
54 |
Correct |
604 ms |
14620 KB |
Output is correct |
55 |
Correct |
956 ms |
22072 KB |
Output is correct |
56 |
Correct |
671 ms |
22188 KB |
Output is correct |
57 |
Correct |
927 ms |
22216 KB |
Output is correct |
58 |
Correct |
651 ms |
22172 KB |
Output is correct |
59 |
Correct |
891 ms |
42440 KB |
Output is correct |
60 |
Correct |
713 ms |
42440 KB |
Output is correct |
61 |
Correct |
492 ms |
14556 KB |
Output is correct |
62 |
Correct |
759 ms |
14632 KB |
Output is correct |
63 |
Correct |
730 ms |
14504 KB |
Output is correct |
64 |
Correct |
715 ms |
14760 KB |
Output is correct |
65 |
Correct |
714 ms |
14772 KB |
Output is correct |
66 |
Correct |
735 ms |
14672 KB |
Output is correct |
67 |
Correct |
792 ms |
14772 KB |
Output is correct |
68 |
Correct |
703 ms |
14692 KB |
Output is correct |
69 |
Correct |
604 ms |
14524 KB |
Output is correct |
70 |
Correct |
802 ms |
14512 KB |
Output is correct |
71 |
Correct |
778 ms |
15664 KB |
Output is correct |
72 |
Correct |
778 ms |
14772 KB |
Output is correct |
73 |
Correct |
670 ms |
14672 KB |
Output is correct |
74 |
Correct |
750 ms |
14628 KB |
Output is correct |
75 |
Correct |
685 ms |
14516 KB |
Output is correct |
76 |
Correct |
814 ms |
15800 KB |
Output is correct |
77 |
Correct |
723 ms |
15776 KB |
Output is correct |
78 |
Correct |
671 ms |
15824 KB |
Output is correct |
79 |
Correct |
808 ms |
14768 KB |
Output is correct |
80 |
Correct |
627 ms |
14520 KB |
Output is correct |
81 |
Correct |
637 ms |
14544 KB |
Output is correct |
82 |
Correct |
715 ms |
14512 KB |
Output is correct |
83 |
Correct |
335 ms |
14544 KB |
Output is correct |
84 |
Correct |
737 ms |
14632 KB |
Output is correct |
85 |
Correct |
740 ms |
14664 KB |
Output is correct |
86 |
Correct |
741 ms |
14672 KB |
Output is correct |
87 |
Correct |
7 ms |
14288 KB |
Output is correct |
88 |
Correct |
497 ms |
21424 KB |
Output is correct |
89 |
Correct |
845 ms |
19684 KB |
Output is correct |
90 |
Correct |
706 ms |
19400 KB |
Output is correct |
91 |
Correct |
857 ms |
22324 KB |
Output is correct |
92 |
Correct |
817 ms |
22304 KB |
Output is correct |
93 |
Correct |
745 ms |
22312 KB |
Output is correct |
94 |
Correct |
754 ms |
22304 KB |
Output is correct |
95 |
Correct |
748 ms |
22212 KB |
Output is correct |
96 |
Correct |
654 ms |
18368 KB |
Output is correct |
97 |
Correct |
759 ms |
18336 KB |
Output is correct |
98 |
Correct |
792 ms |
39800 KB |
Output is correct |
99 |
Correct |
713 ms |
22212 KB |
Output is correct |
100 |
Correct |
728 ms |
19632 KB |
Output is correct |
101 |
Correct |
828 ms |
18976 KB |
Output is correct |
102 |
Correct |
711 ms |
17608 KB |
Output is correct |
103 |
Correct |
784 ms |
42440 KB |
Output is correct |
104 |
Correct |
794 ms |
43692 KB |
Output is correct |
105 |
Correct |
824 ms |
43720 KB |
Output is correct |
106 |
Correct |
665 ms |
23880 KB |
Output is correct |
107 |
Correct |
809 ms |
18264 KB |
Output is correct |
108 |
Correct |
840 ms |
18088 KB |
Output is correct |
109 |
Correct |
830 ms |
17736 KB |
Output is correct |