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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#213568#2770. 子序列one_zero_four_zero60908ms2900kbC++111.7kb2024-11-12 20:56:162024-11-12 23:39:06

answer

#include<bits/stdc++.h>
#pragma GCC optimize(2)
#define mod 998244353LL
using namespace std;

int N, Q, M;
int l, r;
int A[200005];
int cnt[200005][22];
int p[200005], inv[200005];
int C[21][21][200005];

int qpow(int a, int b){
	int res = 1;
	while (b){
		if (b & 1) res = (1LL * res * a) % mod;
		a = (1LL * a * a) % mod;
		b >>= 1;
	}
	return res;
}

void __init(){
	p[0] = inv[0] = 1;
	for (int i = 1; i <= 200000; i ++){
		p[i] = (1LL * i * p[i - 1]) % mod;
		inv[i] = qpow(p[i], mod - 2);
	}
}

long long getC(int n, int m){
	if (n < m) return 0LL;
	long long res = p[n];
	res = (res * inv[n - m]) % mod;
	res = (res * inv[m]) % mod;
	return res;
}

long long calc(int l, int r){
	long long res = 0;
	vector<int> num(22);
	long long dp[22][22] = {0};
	for (int i = 0; i < M; i ++){
		num[i] = cnt[r][i] - cnt[l - 1][i];
		// cout << i << " " << num[i] << ";;\n";
	}
	dp[0][0] = 1LL;
	for (int i = 0; i < M; i ++){ // kao lv i_th
		for (int val = 0; val < M; val ++){
			// cout << i << " " << val << " " << dp[i][val] << ";;\n";
			int cur = 0;
			for (int j = 0; j <= num[i]; j ++){
				dp[i + 1][(val + cur) % M] += (dp[i][val] * getC(num[i], j)) % mod;
				dp[i + 1][(val + cur) % M] %= mod;
				cur = (cur + i) % M;
			}
		}
	}
	return dp[M][0];
}

int main(){
#ifndef ONLINE_JUDGE
	freopen("../data.in", "r", stdin);
	freopen("../data.out", "w", stdout);
#endif

	scanf("%d %d", &N, &M);
	for (int i = 1; i <= N; i ++){
		scanf("%d", &A[i]);
		for (int j = 0; j < M; j ++){
			cnt[i][j] = cnt[i - 1][j];
		}
		cnt[i][A[i]] ++;
	}
	__init();
	scanf("%d", &Q);
	while (Q --){
		scanf("%d %d", &l, &r);
		printf("%lld\n", calc(l, r) % mod);
	}

	return 0;
}

详细

小提示:点击横条可展开更详细的信息

Test #1:

score: 4
Accepted
time: 25ms
memory: 2804kb

input:

10 20
7 5 5 1 7 13 19 10 2 7
10
10 10
6 7
6 8
4 10
8 9
5 8
6 10
5 5
2 6
6 8

output:

1
1
1
9
1
2
2
1
2
1

result:

ok 10 lines

Test #2:

score: 4
Accepted
time: 32ms
memory: 2804kb

input:

10 20
15 0 15 10 6 18 1 13 3 1
10
1 2
4 9
3 7
4 8
6 10
2 3
1 4
2 5
2 9
5 9

output:

2
4
2
2
2
2
4
2
12
3

result:

ok 10 lines

Test #3:

score: 4
Accepted
time: 29ms
memory: 2800kb

input:

10 20
8 9 17 13 10 13 16 11 19 3
10
6 9
3 9
2 6
1 10
5 10
6 10
4 5
2 4
10 10
3 5

output:

2
9
3
56
4
2
1
1
1
2

result:

ok 10 lines

Test #4:

score: 4
Accepted
time: 33ms
memory: 2800kb

input:

10 20
12 8 11 1 0 3 2 3 19 17
10
5 7
1 3
1 10
2 6
4 10
5 9
5 9
3 10
4 8
4 8

output:

2
2
52
4
14
2
2
16
2
2

result:

ok 10 lines

Test #5:

score: 4
Accepted
time: 32ms
memory: 2804kb

input:

10 20
7 0 2 2 8 12 10 7 1 2
10
9 9
6 9
3 7
3 8
1 6
2 4
6 8
4 5
1 6
8 9

output:

1
2
4
4
4
2
1
1
4
1

result:

ok 10 lines

Test #6:

score: 4
Accepted
time: 34ms
memory: 2808kb

input:

100 20
3 15 11 17 7 9 16 11 6 0 1 1 19 15 18 0 14 12 17 9 19 12 18 9 4 14 11 5 18 10 4 18 14 8 14 8 ...

output:

2
3
52430
2
6597996
1677704
639171407
499955182
107374112
3299510
620272825
104768
1639
719742463
84...

result:

ok 100 lines

Test #7:

score: 4
Accepted
time: 32ms
memory: 2816kb

input:

100 20
3 7 17 4 9 6 6 15 18 1 3 5 19 13 2 7 9 10 4 5 0 10 18 18 6 0 1 15 16 12 2 7 6 0 17 2 14 18 4 ...

output:

3355488
198
146407370
410865364
493515490
6710976
7
106
8
1677728
6
551274971
1
252524913
909485871
...

result:

ok 100 lines

Test #8:

score: 4
Accepted
time: 32ms
memory: 2812kb

input:

100 20
1 11 5 10 8 2 11 14 2 11 7 4 13 4 2 1 13 4 0 13 4 8 3 12 12 17 12 13 16 2 5 12 13 0 5 11 0 7 ...

output:

26391984
10
102265781
102298549
692699452
409
5
214748032
1677728
535722995
535730163
848
2
3299254
...

result:

ok 100 lines

Test #9:

score: 4
Accepted
time: 34ms
memory: 2816kb

input:

100 20
8 18 4 8 11 9 1 19 7 14 7 13 4 3 14 0 10 3 13 16 2 5 17 18 7 10 7 3 19 1 16 18 7 13 19 13 2 1...

output:

804
29
26228
214748368
26
406
144284306
107374200
3276
214748736
13196104
102
209724
3355344
419461
...

result:

ok 100 lines

Test #10:

score: 4
Accepted
time: 34ms
memory: 2812kb

input:

100 20
17 1 13 11 0 8 12 2 4 15 14 18 6 6 5 16 18 4 6 19 4 0 4 6 10 19 5 4 18 17 14 16 3 0 1 6 2 4 0...

output:

107223667
107374192
766721907
52
3355432
882475258
396
13195992
1
312054174
156027151
8
640072527
44...

result:

ok 100 lines

Test #11:

score: 4
Accepted
time: 119ms
memory: 2900kb

input:

1000 20
7 14 19 15 16 8 19 15 5 5 6 3 4 16 0 1 7 6 14 3 12 2 4 5 16 12 12 8 1 9 6 13 4 10 12 16 11 7...

output:

339309012
715944960
16970373
501317746
497971938
785900425
283406068
695993316
288567892
854664381
7...

result:

ok 1000 lines

Test #12:

score: 4
Accepted
time: 115ms
memory: 2896kb

input:

1000 20
16 7 12 15 13 10 8 1 14 16 13 6 16 7 4 11 0 17 6 3 4 8 17 10 3 11 18 13 17 19 15 4 7 17 12 4...

output:

12
484141516
418898843
384084964
178290006
933245386
52381
892337346
229891253
934700126
807539512
7...

result:

ok 1000 lines

Test #13:

score: 4
Accepted
time: 124ms
memory: 2896kb

input:

1000 20
7 7 16 0 12 6 11 3 7 16 12 11 1 7 17 0 11 8 14 17 8 17 7 18 1 11 14 0 6 5 10 0 12 15 1 4 5 1...

output:

425631668
766990330
470949041
144283538
76394829
244140496
139661591
660069093
200874398
25390655
76...

result:

ok 1000 lines

Test #14:

score: 4
Accepted
time: 121ms
memory: 2896kb

input:

1000 20
19 3 14 11 9 17 18 4 11 5 0 18 2 11 13 12 8 10 15 19 12 9 2 15 5 19 14 17 17 7 18 5 2 8 5 0 ...

output:

778881096
21365162
250529076
897109757
514479914
7228728
941349307
893048929
815002080
383473661
308...

result:

ok 1000 lines

Test #15:

score: 4
Accepted
time: 112ms
memory: 2892kb

input:

1000 20
16 19 4 2 2 19 19 5 11 4 16 7 17 6 11 11 7 10 6 3 15 1 11 12 5 11 12 13 3 10 12 2 19 9 4 8 6...

output:

137484337
590803498
174472747
415795727
331378054
86892911
572721242
751509743
544015630
579988222
5...

result:

ok 1000 lines

Test #16:

score: 0
Time Limit Exceeded

input:

10000 20
12 8 12 19 9 19 1 10 19 11 12 10 19 5 0 16 17 1 9 18 18 13 6 0 14 16 6 6 3 6 17 2 13 19 13 ...

output:

874193350
88092426
703854077
255513247
263525020
961914369
501713148
112245351
4751861
552142943
766...

result:


Test #17:

score: 0
Time Limit Exceeded

input:

10000 20
8 15 6 17 5 13 11 1 7 9 16 16 15 12 4 19 18 2 3 10 13 15 12 5 3 6 15 2 0 11 8 19 13 18 12 1...

output:

11498054
218890270
805811648
523169045
36644268
676722590
107529713
389206944
180310864
370902170
93...

result:


Test #18:

score: 0
Time Limit Exceeded

input:

10000 20
0 9 6 6 17 19 11 13 18 14 0 10 3 0 0 11 12 11 2 19 18 12 13 16 8 7 14 12 10 2 7 3 4 18 10 1...

output:

963045808
67765534
341654959
274135849
984343299
760669853
518406338
929293037
928480977
282120869
5...

result:


Test #19:

score: 0
Time Limit Exceeded

input:

10000 20
5 13 8 2 2 13 16 17 9 8 15 10 1 12 2 18 19 1 0 17 9 7 16 14 0 9 19 14 13 3 19 17 5 3 19 17 ...

output:

875247851
468456670
916495575
626409154
397961025
981686654
910510358
489047816
475311520
621799641
...

result:


Test #20:

score: 0
Time Limit Exceeded

input:

10000 20
5 8 19 15 4 8 12 14 4 5 16 13 17 9 3 3 15 4 15 19 17 8 14 16 16 13 19 18 19 7 13 5 11 11 12...

output:

48
749885568
651004611
360760522
382504567
80840770
984919888
975485976
602298974
810921063
70525290...

result:


Test #21:

score: 0
Time Limit Exceeded

input:

200000 20
11 5 3 3 2 9 10 10 15 4 19 1 3 0 19 19 15 0 0 12 14 16 1 8 3 18 10 6 14 11 2 7 17 2 0 1 12...

output:


result:


Test #22:

score: 0
Time Limit Exceeded

input:

200000 20
13 15 5 3 2 0 3 4 6 16 14 0 4 11 8 10 18 5 3 12 1 7 2 16 13 19 16 16 3 16 6 8 2 6 10 0 13 ...

output:


result:


Test #23:

score: 0
Time Limit Exceeded

input:

200000 20
15 8 8 12 19 10 4 14 16 6 3 17 13 4 14 17 5 15 19 4 0 3 17 5 4 9 14 19 10 11 9 13 0 3 18 0...

output:


result:


Test #24:

score: 0
Time Limit Exceeded

input:

200000 20
11 4 7 18 16 15 15 18 11 2 4 1 17 18 6 9 19 12 2 14 8 6 10 4 15 16 17 13 18 1 15 18 15 9 1...

output:


result:


Test #25:

score: 0
Time Limit Exceeded

input:

200000 20
5 3 18 11 17 13 14 19 0 0 1 3 4 13 8 1 15 7 15 2 12 8 3 15 8 1 4 8 7 5 9 16 9 16 0 14 2 16...

output:


result: