QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #525571 | #8702. 狼人杀 | DaiRuiChen007 | 100 ✓ | 752ms | 31024kb | C++17 | 466b | 2024-08-20 18:32:22 | 2024-08-20 18:32:22 |
Judging History
answer
#include<bits/stdc++.h>
using I=long long;I n,m,o,s,q,i,j,k,P=1e9+7;std::array<I,2>dp[155][11505];I V(I a){I z=1;for(I b=P-2;b;a=a*a%P,b>>=1)if(b&1)z=z*a%P;return z;}
main(){std::cin>>n>>o,q=V(m=n*(n+1)/2),dp[0][0][0]=1;for(i=1;i<=n+1;++i)if(i^o)for(j=0;j<i;++j)for(k=0;k<=m;++k){auto &f=dp[i][k+(i-j)*(i-j-1)/2],g=dp[j][k];f[0]=(f[0]-g[0])%P,f[1]=(f[1]-g[1]-g[0]*(i-j-1-(j<o&&o<i)))%P;}for(k=0;k<=m;++k)s=(s+dp[n+1][k][1]*V(1-q*k%P))%P;std::cout<<(s+P)*V(n-1)%P;}
Details
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Subtask #1:
score: 23
Accepted
Test #1:
score: 23
Accepted
time: 1ms
memory: 3740kb
input:
12 2
output:
183756997
result:
ok single line: '183756997'
Test #2:
score: 23
Accepted
time: 1ms
memory: 3640kb
input:
17 6
output:
97571903
result:
ok single line: '97571903'
Test #3:
score: 23
Accepted
time: 0ms
memory: 3732kb
input:
13 3
output:
209826617
result:
ok single line: '209826617'
Test #4:
score: 23
Accepted
time: 0ms
memory: 3732kb
input:
13 8
output:
176038768
result:
ok single line: '176038768'
Test #5:
score: 23
Accepted
time: 1ms
memory: 3768kb
input:
18 4
output:
288404061
result:
ok single line: '288404061'
Test #6:
score: 23
Accepted
time: 0ms
memory: 3712kb
input:
10 10
output:
219657163
result:
ok single line: '219657163'
Test #7:
score: 23
Accepted
time: 1ms
memory: 3712kb
input:
19 15
output:
590577825
result:
ok single line: '590577825'
Test #8:
score: 23
Accepted
time: 0ms
memory: 3760kb
input:
11 6
output:
488143489
result:
ok single line: '488143489'
Test #9:
score: 23
Accepted
time: 0ms
memory: 3780kb
input:
10 5
output:
470594541
result:
ok single line: '470594541'
Test #10:
score: 23
Accepted
time: 1ms
memory: 3860kb
input:
20 5
output:
582458555
result:
ok single line: '582458555'
Test #11:
score: 23
Accepted
time: 0ms
memory: 3732kb
input:
20 12
output:
648081410
result:
ok single line: '648081410'
Test #12:
score: 23
Accepted
time: 1ms
memory: 3796kb
input:
20 4
output:
335777285
result:
ok single line: '335777285'
Test #13:
score: 23
Accepted
time: 1ms
memory: 3792kb
input:
20 15
output:
389216500
result:
ok single line: '389216500'
Test #14:
score: 23
Accepted
time: 1ms
memory: 3812kb
input:
20 16
output:
582458555
result:
ok single line: '582458555'
Test #15:
score: 23
Accepted
time: 1ms
memory: 3808kb
input:
20 19
output:
589126150
result:
ok single line: '589126150'
Test #16:
score: 23
Accepted
time: 1ms
memory: 3808kb
input:
20 6
output:
389216500
result:
ok single line: '389216500'
Subtask #2:
score: 34
Accepted
Dependency #1:
100%
Accepted
Test #17:
score: 34
Accepted
time: 7ms
memory: 5084kb
input:
49 14
output:
486918542
result:
ok single line: '486918542'
Test #18:
score: 34
Accepted
time: 2ms
memory: 3940kb
input:
28 13
output:
642223597
result:
ok single line: '642223597'
Test #19:
score: 34
Accepted
time: 0ms
memory: 4256kb
input:
35 23
output:
842346505
result:
ok single line: '842346505'
Test #20:
score: 34
Accepted
time: 9ms
memory: 4984kb
input:
47 11
output:
583647040
result:
ok single line: '583647040'
Test #21:
score: 34
Accepted
time: 3ms
memory: 4236kb
input:
34 30
output:
990970048
result:
ok single line: '990970048'
Test #22:
score: 34
Accepted
time: 2ms
memory: 4032kb
input:
30 7
output:
393675971
result:
ok single line: '393675971'
Test #23:
score: 34
Accepted
time: 3ms
memory: 4664kb
input:
43 5
output:
737421246
result:
ok single line: '737421246'
Test #24:
score: 34
Accepted
time: 2ms
memory: 4028kb
input:
30 21
output:
254760745
result:
ok single line: '254760745'
Test #25:
score: 34
Accepted
time: 0ms
memory: 3988kb
input:
27 22
output:
266692865
result:
ok single line: '266692865'
Test #26:
score: 34
Accepted
time: 5ms
memory: 4548kb
input:
40 12
output:
133652311
result:
ok single line: '133652311'
Test #27:
score: 34
Accepted
time: 2ms
memory: 4084kb
input:
29 4
output:
873892090
result:
ok single line: '873892090'
Test #28:
score: 34
Accepted
time: 11ms
memory: 5136kb
input:
50 46
output:
267950067
result:
ok single line: '267950067'
Test #29:
score: 34
Accepted
time: 11ms
memory: 5164kb
input:
50 11
output:
423642322
result:
ok single line: '423642322'
Test #30:
score: 34
Accepted
time: 11ms
memory: 5136kb
input:
50 43
output:
625476642
result:
ok single line: '625476642'
Test #31:
score: 34
Accepted
time: 11ms
memory: 5148kb
input:
50 36
output:
767166129
result:
ok single line: '767166129'
Test #32:
score: 34
Accepted
time: 11ms
memory: 5156kb
input:
50 14
output:
357467965
result:
ok single line: '357467965'
Test #33:
score: 34
Accepted
time: 11ms
memory: 5144kb
input:
50 30
output:
219673347
result:
ok single line: '219673347'
Test #34:
score: 34
Accepted
time: 7ms
memory: 5144kb
input:
50 44
output:
392786132
result:
ok single line: '392786132'
Test #35:
score: 34
Accepted
time: 11ms
memory: 5160kb
input:
50 10
output:
848251616
result:
ok single line: '848251616'
Subtask #3:
score: 43
Accepted
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Test #36:
score: 43
Accepted
time: 51ms
memory: 8400kb
input:
75 47
output:
668751416
result:
ok single line: '668751416'
Test #37:
score: 43
Accepted
time: 43ms
memory: 8380kb
input:
75 41
output:
310834114
result:
ok single line: '310834114'
Test #38:
score: 43
Accepted
time: 463ms
memory: 25980kb
input:
133 124
output:
57167600
result:
ok single line: '57167600'
Test #39:
score: 43
Accepted
time: 417ms
memory: 24588kb
input:
129 74
output:
751074385
result:
ok single line: '751074385'
Test #40:
score: 43
Accepted
time: 484ms
memory: 26788kb
input:
135 133
output:
759430862
result:
ok single line: '759430862'
Test #41:
score: 43
Accepted
time: 47ms
memory: 8412kb
input:
75 19
output:
967921272
result:
ok single line: '967921272'
Test #42:
score: 43
Accepted
time: 360ms
memory: 23100kb
input:
124 9
output:
641081661
result:
ok single line: '641081661'
Test #43:
score: 43
Accepted
time: 53ms
memory: 8600kb
input:
76 66
output:
465902083
result:
ok single line: '465902083'
Test #44:
score: 43
Accepted
time: 613ms
memory: 28856kb
input:
142 13
output:
12401929
result:
ok single line: '12401929'
Test #45:
score: 43
Accepted
time: 752ms
memory: 30696kb
input:
150 5
output:
388058135
result:
ok single line: '388058135'
Test #46:
score: 43
Accepted
time: 209ms
memory: 17648kb
input:
109 97
output:
381109644
result:
ok single line: '381109644'
Test #47:
score: 43
Accepted
time: 728ms
memory: 30996kb
input:
150 133
output:
174431234
result:
ok single line: '174431234'
Test #48:
score: 43
Accepted
time: 731ms
memory: 31024kb
input:
150 147
output:
198921722
result:
ok single line: '198921722'
Test #49:
score: 43
Accepted
time: 736ms
memory: 30992kb
input:
150 142
output:
631473185
result:
ok single line: '631473185'
Test #50:
score: 43
Accepted
time: 741ms
memory: 30848kb
input:
150 136
output:
743180069
result:
ok single line: '743180069'
Test #51:
score: 43
Accepted
time: 748ms
memory: 30980kb
input:
150 138
output:
621574340
result:
ok single line: '621574340'
Test #52:
score: 43
Accepted
time: 744ms
memory: 30964kb
input:
150 119
output:
872660153
result:
ok single line: '872660153'
Test #53:
score: 43
Accepted
time: 740ms
memory: 30988kb
input:
150 144
output:
939939060
result:
ok single line: '939939060'
Test #54:
score: 43
Accepted
time: 752ms
memory: 30836kb
input:
150 1
output:
166208360
result:
ok single line: '166208360'
Test #55:
score: 43
Accepted
time: 747ms
memory: 30736kb
input:
150 75
output:
353929212
result:
ok single line: '353929212'