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#233301#7662. Kaldorian KnightsValenciaTravis#AC ✓244ms72472kbC++20689b2023-10-31 16:11:142023-10-31 16:11:14

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你现在查看的是最新测评结果

  • [2023-10-31 16:11:14]
  • 评测
  • 测评结果：AC
  • 用时：244ms
  • 内存：72472kb
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  • [2023-10-31 16:11:14]
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answer

#include<bits/stdc++.h>
using namespace std;
#define MAXN 1000005
#define ll long long
const ll mod = 1e9 + 7;
ll n, m, fac[MAXN], k[MAXN], sum[MAXN];
unordered_map<int, ll> dp[MAXN];
ll dfs(int n, int t){
    if(dp[n].count(t)) return dp[n][t];
    dp[n][t] = fac[n];
    for(int i=1;i<=t;i++){
        dp[n][t] -= dfs(sum[i], i-1) * fac[n-sum[i]] % mod;
    }
    dp[n][t] = (dp[n][t] % mod + mod) % mod;
    return dp[n][t];
}
int main(){
    cin>>n>>m;
    fac[0] = 1;
    for(int i=1;i<=n;i++) fac[i] = fac[i-1] * i % mod;
    ll ans = fac[n];
    for(int i=1;i<=m;i++) scanf("%lld", &k[i]), sum[i] = sum[i-1] + k[i];
    cout<<dfs(n, m)<<endl;
    return 0;
}
Source code, Language: C++20

Details

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Test #1:

score: 100
Accepted
time: 3ms
memory: 61040kb

input:

3 0

output:

6

result:

ok single line: '6'

Test #2:

score: 0
Accepted
time: 4ms
memory: 64132kb

input:

4 1
3

output:

18

result:

ok single line: '18'

Test #3:

score: 0
Accepted
time: 15ms
memory: 63800kb

input:

4 2
2
1

output:

16

result:

ok single line: '16'

Test #4:

score: 0
Accepted
time: 8ms
memory: 63448kb

input:

10 1
10

output:

0

result:

ok single line: '0'

Test #5:

score: 0
Accepted
time: 4ms
memory: 62884kb

input:

10 10
1
1
1
1
1
1
1
1
1
1

output:

0

result:

ok single line: '0'

Test #6:

score: 0
Accepted
time: 10ms
memory: 63320kb

input:

1357 7
56
173
21
103
96
149
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output:

1000000006

result:

ok single line: '1000000006'

Test #7:

score: 0
Accepted
time: 8ms
memory: 63448kb

input:

1357 5
190
198
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output:

1000000005

result:

ok single line: '1000000005'

Test #8:

score: 0
Accepted
time: 4ms
memory: 64096kb

input:

1357 7
144
56
113
20
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output:

0

result:

ok single line: '0'

Test #9:

score: 0
Accepted
time: 11ms
memory: 64260kb

input:

1357 7
107
29
131
99
180
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output:

1

result:

ok single line: '1'

Test #10:

score: 0
Accepted
time: 3ms
memory: 62748kb

input:

1357 7
124
180
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103
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145
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output:

2

result:

ok single line: '2'

Test #11:

score: 0
Accepted
time: 14ms
memory: 63868kb

input:

750 66
7
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1
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output:

685840434

result:

ok single line: '685840434'

Test #12:

score: 0
Accepted
time: 4ms
memory: 64084kb

input:

750 66
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output:

148626971

result:

ok single line: '148626971'

Test #13:

score: 0
Accepted
time: 3ms
memory: 64460kb

input:

750 66
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output:

817964272

result:

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Test #14:

score: 0
Accepted
time: 9ms
memory: 62632kb

input:

750 66
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output:

936531345

result:

ok single line: '936531345'

Test #15:

score: 0
Accepted
time: 3ms
memory: 64416kb

input:

750 66
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output:

484040613

result:

ok single line: '484040613'

Test #16:

score: 0
Accepted
time: 8ms
memory: 63292kb

input:

750 66
4
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output:

205283749

result:

ok single line: '205283749'

Test #17:

score: 0
Accepted
time: 7ms
memory: 62904kb

input:

10000 135
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8
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1...

output:

238689397

result:

ok single line: '238689397'

Test #18:

score: 0
Accepted
time: 3ms
memory: 64280kb

input:

10000 135
39
35
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63
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27
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24...

output:

655049586

result:

ok single line: '655049586'

Test #19:

score: 0
Accepted
time: 11ms
memory: 62564kb

input:

10000 135
56
44
26
41
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50
35
46
28
34
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69
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8
12
59
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15
11
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6...

output:

186140421

result:

ok single line: '186140421'

Test #20:

score: 0
Accepted
time: 11ms
memory: 64372kb

input:

10000 135
29
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11...

output:

45969765

result:

ok single line: '45969765'

Test #21:

score: 0
Accepted
time: 4ms
memory: 62824kb

input:

10000 135
26
40
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23
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22
9
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3...

output:

846150921

result:

ok single line: '846150921'

Test #22:

score: 0
Accepted
time: 244ms
memory: 70424kb

input:

1000000 5000
104
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160
121
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76
184
34
146
1
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3
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...

output:

333934562

result:

ok single line: '333934562'

Test #23:

score: 0
Accepted
time: 222ms
memory: 72180kb

input:

1000000 5000
11
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...

output:

805474992

result:

ok single line: '805474992'

Test #24:

score: 0
Accepted
time: 228ms
memory: 70456kb

input:

1000000 5000
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9...

output:

856609483

result:

ok single line: '856609483'

Test #25:

score: 0
Accepted
time: 219ms
memory: 72472kb

input:

1000000 5000
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128
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72...

output:

74206270

result:

ok single line: '74206270'

Test #26:

score: 0
Accepted
time: 223ms
memory: 70200kb

input:

1000000 5000
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...

output:

149257141

result:

ok single line: '149257141'

Test #27:

score: 0
Accepted
time: 222ms
memory: 72288kb

input:

1000000 5000
18
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...

output:

632175646

result:

ok single line: '632175646'

Test #28:

score: 0
Accepted
time: 221ms
memory: 72452kb

input:

1000000 5000
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1...

output:

270910653

result:

ok single line: '270910653'

Test #29:

score: 0
Accepted
time: 218ms
memory: 70452kb

input:

1000000 5000
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105...

output:

556724173

result:

ok single line: '556724173'

Test #30:

score: 0
Accepted
time: 227ms
memory: 70204kb

input:

1000000 5000
5
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4...

output:

569427125

result:

ok single line: '569427125'

Test #31:

score: 0
Accepted
time: 8ms
memory: 63900kb

input:

750 66
1
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1
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1
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output:

557711843

result:

ok single line: '557711843'

Test #32:

score: 0
Accepted
time: 8ms
memory: 63112kb

input:

750 66
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output:

525639093

result:

ok single line: '525639093'

Test #33:

score: 0
Accepted
time: 7ms
memory: 63112kb

input:

750 66
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1
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1
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output:

486590099

result:

ok single line: '486590099'

Test #34:

score: 0
Accepted
time: 8ms
memory: 63408kb

input:

750 66
3
2
1
8
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output:

698145385

result:

ok single line: '698145385'

Test #35:

score: 0
Accepted
time: 7ms
memory: 63984kb

input:

750 66
3
4
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output:

60567788

result:

ok single line: '60567788'

Test #36:

score: 0
Accepted
time: 4ms
memory: 64288kb

input:

750 66
1
3
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5
3
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1
1
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output:

129540106

result:

ok single line: '129540106'

Test #37:

score: 0
Accepted
time: 8ms
memory: 62884kb

input:

10000 135
4
22
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1...

output:

950985806

result:

ok single line: '950985806'

Test #38:

score: 0
Accepted
time: 4ms
memory: 64244kb

input:

10000 135
29
6
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output:

156060910

result:

ok single line: '156060910'

Test #39:

score: 0
Accepted
time: 7ms
memory: 63244kb

input:

10000 135
21
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...

output:

182793092

result:

ok single line: '182793092'

Test #40:

score: 0
Accepted
time: 9ms
memory: 62684kb

input:

10000 135
27
4
11
4
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1
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5...

output:

101235192

result:

ok single line: '101235192'

Test #41:

score: 0
Accepted
time: 7ms
memory: 64400kb

input:

10000 135
6
42
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31
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1
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2...

output:

453204761

result:

ok single line: '453204761'

Test #42:

score: 0
Accepted
time: 223ms
memory: 72156kb

input:

1000000 5000
30
14
29
134
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output:

31122794

result:

ok single line: '31122794'

Test #43:

score: 0
Accepted
time: 216ms
memory: 72224kb

input:

1000000 5000
3
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3...

output:

683325494

result:

ok single line: '683325494'

Test #44:

score: 0
Accepted
time: 216ms
memory: 70208kb

input:

1000000 5000
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...

output:

643337483

result:

ok single line: '643337483'

Test #45:

score: 0
Accepted
time: 219ms
memory: 70404kb

input:

1000000 5000
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1...

output:

468754028

result:

ok single line: '468754028'

Test #46:

score: 0
Accepted
time: 215ms
memory: 70180kb

input:

1000000 5000
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34...

output:

654872983

result:

ok single line: '654872983'

Test #47:

score: 0
Accepted
time: 215ms
memory: 72248kb

input:

1000000 5000
1
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3...

output:

214931813

result:

ok single line: '214931813'

Test #48:

score: 0
Accepted
time: 215ms
memory: 70204kb

input:

1000000 5000
4
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1...

output:

457872307

result:

ok single line: '457872307'

Test #49:

score: 0
Accepted
time: 214ms
memory: 70204kb

input:

1000000 5000
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107
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...

output:

878326417

result:

ok single line: '878326417'

Test #50:

score: 0
Accepted
time: 216ms
memory: 70196kb

input:

1000000 5000
2
14
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104
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53
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157
88
5
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3...

output:

900093672

result:

ok single line: '900093672'
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