QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#123310 | #4921. 匹配计数 | Myrrh | 10 | 107ms | 69332kb | C++14 | 891b | 2023-07-12 11:36:27 | 2023-07-12 11:36:28 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int MAXN=2e3+50,P=998244353;
int N;
int a[MAXN];
long long f[MAXN][MAXN][2];
int main()
{
int T;
scanf("%d",&T);
while(T--)
{
scanf("%d",&N);
for(int i=1;i<=N;i++)
{
scanf("%d",&a[i]);
}
for(int i=1;i<=N;i++)
{
for(int j=0;j<=N;j++)
{
f[i][j][0]=f[i][j][1]=0;
}
}
f[0][0][0]=1;
for(int i=1;i<=N;i++)
{
for(int j=0;j<=i;j++)
{
f[i][j][0]=(f[i-1][j][0]+1ll*((j+1-1)/2+1)*f[i-1][j+1][0]+1ll*(j+1)/2*f[i-1][j+1][1])%P;
if(j>0)
f[i][j][0]=(f[i][j][0]+f[i-1][j-1][0])%P;
f[i][j][1]=(f[i-1][j][1]+1ll*((j+1-1)/2+1)*f[i-1][j+1][1]+1ll*(j+1)/2*f[i-1][j+1][0])%P;
if(j>0)
f[i][j][1]=(f[i][j][1]+f[i-1][j-1][1])%P;
// cout<<i<<" "<<j<<" "<<f[i][j][0]<<" "<<f[i][j][1]<<endl;
}
}
printf("%lld\n",f[N][0][0]);
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 3688kb
input:
5 11 4 1 9 11 7 10 6 9 11 6 5 13 2 2 1 2 1 2 1 1 2 1 1 2 1 12 6 1 6 1 4 5 6 2 2 1 6 4 12 2 1 2 4 2 1 4 1 3 2 2 4 13 2 3 1 4 3 3 1 3 1 3 1 1 3
output:
18360 286300 71100 71100 286300
result:
wrong answer 1st numbers differ - expected: '4', found: '18360'
Test #2:
score: 0
Wrong Answer
time: 1ms
memory: 3636kb
input:
5 13 4 4 5 2 3 2 2 5 1 3 4 1 5 11 1 1 1 1 1 1 1 1 1 1 1 13 1 1 2 2 2 1 1 2 2 2 2 1 2 11 3 3 3 1 2 3 2 1 1 2 2 12 2 5 6 1 5 6 1 4 5 6 4 3
output:
286300 18360 286300 18360 71100
result:
wrong answer 1st numbers differ - expected: '160', found: '286300'
Test #3:
score: 5
Accepted
time: 101ms
memory: 67720kb
input:
5 1986 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 286 2...
output:
319366059 289574279 419748641 495397644 522687460
result:
ok 5 number(s): "319366059 289574279 419748641 495397644 522687460"
Test #4:
score: 5
Accepted
time: 95ms
memory: 67740kb
input:
5 1987 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 989 9...
output:
355799162 110832579 987068911 987068911 355799162
result:
ok 5 number(s): "355799162 110832579 987068911 987068911 355799162"
Test #5:
score: 0
Wrong Answer
time: 97ms
memory: 68452kb
input:
5 2000 9 7 5 10 3 5 6 10 2 5 6 7 10 7 5 5 10 9 4 4 5 1 2 10 7 5 6 1 2 4 8 3 1 1 2 6 4 5 1 7 3 4 3 2 9 9 5 6 4 4 5 10 1 6 6 2 8 6 6 8 10 2 8 7 2 6 3 5 2 3 6 5 4 2 7 3 2 5 1 3 10 10 8 7 1 7 2 7 2 3 8 4 4 8 6 1 8 7 1 4 6 5 6 5 4 7 4 9 2 1 1 1 3 4 6 6 8 6 7 1 8 6 10 4 6 7 10 6 8 8 9 5 9 7 3 10 2 9 9 6 3...
output:
914689370 198896913 914689370 659581039 318052721
result:
wrong answer 1st numbers differ - expected: '16972030', found: '914689370'
Test #6:
score: 0
Wrong Answer
time: 98ms
memory: 68276kb
input:
5 1987 9 10 3 9 1 9 2 8 2 1 9 9 6 9 1 2 10 10 8 7 5 6 2 5 1 7 10 4 4 3 6 2 2 6 3 8 9 8 9 3 2 6 5 9 2 5 6 6 1 6 1 9 8 6 9 10 10 5 8 3 5 4 4 6 6 7 4 2 2 10 9 8 10 4 8 7 9 8 7 3 6 3 9 4 3 6 9 2 10 4 2 4 3 5 7 8 10 5 6 3 7 5 6 5 7 1 10 4 6 5 6 1 1 10 9 8 10 3 5 7 10 2 5 2 9 7 3 9 6 2 9 6 9 4 6 7 7 5 5 3...
output:
355799162 198896913 572263135 355799162 681458714
result:
wrong answer 1st numbers differ - expected: '354126359', found: '355799162'
Test #7:
score: 0
Wrong Answer
time: 98ms
memory: 67640kb
input:
5 1996 9 3 3 1 9 1 5 9 7 2 9 6 2 9 10 6 6 10 2 8 10 8 3 3 7 3 10 8 5 4 6 7 5 4 1 8 5 3 7 6 4 8 7 10 6 10 10 9 4 7 6 8 1 8 8 9 9 5 4 5 5 1 9 7 10 9 4 4 2 3 4 8 6 5 2 9 6 7 8 9 10 2 5 8 9 1 5 5 9 4 9 6 3 5 1 7 5 8 8 1 1 7 4 10 9 3 1 8 4 4 6 3 1 5 2 5 9 3 1 2 10 3 9 10 10 2 4 3 7 9 9 6 2 6 8 9 6 1 10 8...
output:
681458714 319366059 787135304 572263135 319366059
result:
wrong answer 1st numbers differ - expected: '523274896', found: '681458714'
Test #8:
score: 0
Wrong Answer
time: 100ms
memory: 68536kb
input:
5 1992 6 6 6 4 6 2 9 10 4 3 9 1 3 6 6 4 1 9 4 10 1 1 6 1 1 2 8 3 1 4 10 4 7 4 4 8 1 7 4 8 5 10 1 10 3 9 5 10 7 3 2 7 10 2 6 3 5 9 3 9 4 9 3 9 8 10 3 6 1 4 7 6 3 5 4 10 5 5 9 1 6 10 8 3 5 4 7 7 10 5 4 8 2 4 3 8 9 8 9 4 2 4 10 5 1 2 2 6 3 2 2 2 2 6 9 6 5 1 9 2 4 8 10 7 9 8 10 7 7 10 5 9 3 5 8 4 10 6 7...
output:
289574279 659581039 681458714 238063391 681458714
result:
wrong answer 1st numbers differ - expected: '645261509', found: '289574279'
Test #9:
score: 0
Wrong Answer
time: 96ms
memory: 69200kb
input:
5 1993 4 4 10 7 3 6 7 2 7 3 7 8 1 9 4 7 5 7 9 10 10 4 2 1 10 4 2 8 3 4 5 1 9 6 1 5 2 8 6 6 8 3 3 1 4 8 1 10 4 6 7 10 8 9 6 5 9 10 7 3 9 10 6 6 2 1 5 8 6 8 8 8 5 1 5 9 7 7 7 6 10 8 7 7 10 4 3 5 1 1 8 8 6 5 8 6 8 2 6 7 5 6 9 7 4 5 3 10 8 9 7 2 1 5 8 9 4 4 3 7 4 4 6 9 10 4 7 7 6 8 9 1 9 9 10 2 10 5 6 8...
output:
212001477 987068911 212001477 914689370 289574279
result:
wrong answer 1st numbers differ - expected: '118938038', found: '212001477'
Test #10:
score: 0
Wrong Answer
time: 101ms
memory: 68164kb
input:
5 1982 2 1 2 6 9 5 5 2 10 10 3 8 10 3 2 6 9 5 7 4 5 3 10 3 2 6 3 5 9 9 1 5 3 7 1 10 10 8 6 9 7 6 1 9 4 10 5 1 5 4 3 7 2 4 6 2 10 2 10 8 7 8 2 6 2 3 5 6 4 10 2 10 5 3 9 8 3 2 1 8 9 2 5 8 9 4 10 7 3 1 5 2 9 8 7 6 1 4 4 10 4 1 8 8 9 10 8 10 3 4 9 3 8 2 2 1 10 4 8 2 1 6 2 3 6 8 2 3 2 10 1 6 5 3 3 1 8 3 ...
output:
238063391 659581039 522687460 355799162 289574279
result:
wrong answer 1st numbers differ - expected: '157217016', found: '238063391'
Test #11:
score: 0
Wrong Answer
time: 3ms
memory: 13924kb
input:
5 280 9 9 3 15 12 18 8 2 18 18 8 3 15 14 7 3 18 16 11 13 1 12 14 14 2 15 15 14 2 6 5 3 9 10 9 2 3 7 18 3 12 1 4 16 5 18 2 4 14 13 1 14 5 2 16 18 12 13 11 15 14 13 15 8 2 14 16 17 17 13 8 9 7 2 8 9 6 13 11 8 16 1 16 4 5 17 17 5 10 16 15 15 13 8 4 18 6 18 8 14 4 15 11 12 17 18 12 3 8 10 12 15 6 16 17 ...
output:
347744313 439041185 314344152 926681498 899018250
result:
wrong answer 1st numbers differ - expected: '753377949', found: '347744313'
Test #12:
score: 0
Wrong Answer
time: 5ms
memory: 14172kb
input:
5 288 19 10 7 10 2 8 17 2 15 11 1 9 16 20 7 2 9 14 4 7 8 1 1 11 4 1 6 12 10 5 17 4 8 16 3 8 16 20 17 18 10 5 11 14 9 8 9 11 19 13 18 20 2 1 10 11 17 12 3 12 4 6 20 14 15 16 12 9 5 17 9 7 11 18 8 4 6 19 7 16 15 12 14 16 2 19 2 15 9 13 11 19 10 6 7 14 18 4 4 14 11 5 18 16 8 2 17 20 11 11 18 10 16 15 1...
output:
510257441 764592139 60003666 899018250 512011602
result:
wrong answer 1st numbers differ - expected: '877401013', found: '510257441'
Test #13:
score: 0
Wrong Answer
time: 5ms
memory: 13976kb
input:
5 281 15 1 5 13 10 9 9 5 12 2 12 15 6 15 9 10 10 4 3 1 6 13 5 2 16 3 8 16 2 11 8 6 8 15 9 14 7 1 5 1 16 12 10 15 6 13 2 1 13 3 3 13 3 3 8 9 3 15 15 4 7 8 5 2 14 1 15 6 15 6 10 5 13 13 5 8 11 11 13 2 2 10 9 3 16 10 8 12 3 6 8 4 7 8 8 11 12 15 16 13 11 16 15 9 10 11 5 2 15 16 3 5 1 2 15 12 5 10 12 3 8...
output:
558847238 60003666 60003666 142953626 512011602
result:
wrong answer 1st numbers differ - expected: '271415502', found: '558847238'
Test #14:
score: 0
Wrong Answer
time: 0ms
memory: 14200kb
input:
5 282 8 10 3 15 14 5 13 12 2 17 12 2 3 3 3 3 5 10 4 4 5 6 12 12 16 12 14 5 6 5 10 13 8 6 5 9 13 11 3 4 10 17 3 15 3 16 3 4 3 15 14 8 17 6 9 4 14 3 2 12 1 8 13 10 10 9 13 3 7 14 17 6 3 7 6 6 3 14 8 12 15 6 2 3 4 14 16 9 10 16 4 2 14 10 3 5 13 5 11 15 16 9 1 13 9 13 4 9 13 10 5 5 15 5 13 8 14 7 17 11 ...
output:
512011602 677325937 858572159 314344152 550539071
result:
wrong answer 1st numbers differ - expected: '22603617', found: '512011602'
Test #15:
score: 0
Wrong Answer
time: 92ms
memory: 69332kb
input:
5 1900 41 13 29 21 31 26 37 32 8 24 27 24 2 20 33 33 18 40 38 44 21 40 30 45 31 39 32 41 34 13 6 38 36 39 47 14 26 27 14 35 9 23 7 15 4 26 39 44 16 24 44 36 46 14 32 43 32 22 6 28 11 16 43 10 10 2 24 12 9 26 16 25 30 33 9 7 44 32 46 31 41 23 10 38 37 31 36 18 41 11 20 14 18 30 27 32 31 13 31 40 39 4...
output:
46584868 840836882 914689370 549917849 502008325
result:
wrong answer 1st numbers differ - expected: '332471774', found: '46584868'
Test #16:
score: 0
Wrong Answer
time: 99ms
memory: 68696kb
input:
5 1999 21 14 5 7 15 10 31 16 12 30 43 41 27 38 19 37 15 27 25 25 16 41 35 8 14 27 22 14 24 8 2 34 12 19 31 38 47 29 6 16 31 13 3 30 39 19 26 21 35 9 7 11 37 11 10 22 39 9 19 36 2 10 27 28 14 19 3 21 43 41 32 22 48 3 40 30 17 3 22 37 6 39 20 18 42 11 25 14 34 33 1 40 47 20 29 27 37 41 42 46 12 22 22 ...
output:
495397644 746547695 139211669 265240091 914689370
result:
wrong answer 1st numbers differ - expected: '353685051', found: '495397644'
Test #17:
score: 0
Wrong Answer
time: 99ms
memory: 68420kb
input:
5 1925 1118 1447 1229 694 1207 106 826 856 1352 1116 434 549 667 564 613 340 380 476 45 835 623 505 1536 593 1345 931 842 1518 1512 1244 648 527 1386 52 813 441 664 694 1455 893 381 136 1553 7 236 907 824 795 233 768 1489 551 431 932 1366 608 1290 1337 473 521 1386 849 970 1287 711 1505 1199 1176 29...
output:
265240091 914689370 495397644 334438381 840836882
result:
wrong answer 1st numbers differ - expected: '741937234', found: '265240091'
Test #18:
score: 0
Wrong Answer
time: 99ms
memory: 67760kb
input:
5 1998 31 21 6 18 5 11 10 38 43 46 1 27 5 11 43 31 29 41 12 10 28 19 14 31 35 14 6 46 34 38 18 21 14 45 34 15 30 25 41 19 40 21 20 26 30 11 3 35 18 24 42 4 35 4 1 42 3 13 19 12 19 41 43 36 15 38 46 39 28 9 34 46 19 24 46 45 4 27 37 1 46 43 7 4 46 6 46 44 9 39 24 15 14 46 26 39 14 6 10 1 31 22 21 46 ...
output:
787135304 552727575 174803170 477682461 168188529
result:
wrong answer 1st numbers differ - expected: '141403204', found: '787135304'
Test #19:
score: 0
Wrong Answer
time: 98ms
memory: 68116kb
input:
5 1952 24 36 19 25 33 24 1 39 4 39 9 38 13 4 21 37 24 29 32 2 7 17 25 14 38 27 12 39 3 6 25 14 9 34 33 19 7 6 30 37 5 6 34 6 31 31 35 7 29 24 37 40 25 28 1 34 18 37 37 40 33 3 3 35 35 13 7 14 15 31 3 26 24 12 29 11 12 14 19 10 6 5 22 11 25 12 13 18 6 26 35 34 24 23 4 38 22 5 12 36 9 2 16 14 22 35 1 ...
output:
841858521 663171950 139211669 914689370 704929416
result:
wrong answer 1st numbers differ - expected: '476822210', found: '841858521'
Test #20:
score: 0
Wrong Answer
time: 107ms
memory: 67968kb
input:
5 2000 500 499 498 497 496 495 494 493 492 491 490 489 488 487 486 485 484 483 482 481 480 479 478 477 476 475 474 473 472 471 470 469 468 467 466 465 464 463 462 461 460 459 458 457 456 455 454 453 452 451 450 449 448 447 446 445 444 443 442 441 440 439 438 437 436 435 434 433 432 431 430 429 428 4...
output:
914689370 914689370 914689370 914689370 914689370
result:
wrong answer 1st numbers differ - expected: '88551220', found: '914689370'