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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
#765748#9254. Random Variablespiggy123TL 946ms17544kbC++173.7kb2024-11-20 15:10:212024-11-20 15:10:23

Judging History

This is the latest submission verdict.

  • [2024-11-20 15:10:23]
  • Judged
  • Verdict: TL
  • Time: 946ms
  • Memory: 17544kb
  • [2024-11-20 15:10:21]
  • Submitted

answer

#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll C[1005][1005],C2[1005],inv[1005],pw[1005],dp[1005][1005],mod;
const ll N=1000;

ll qkp(ll a,ll k){
	ll ans=1;
	while (k){
		if (k&1)ans*=a,ans%=mod;
		a*=a,a%=mod;
		k>>=1;
	}
	return ans;
}

int main() {
	ll T;
	cin >> T >> mod;
	C[0][0]=1;
	for (ll i=1; i<=N; i++) {
		C[i][0]=1;
		for (ll j=1; j<=N; j++) {
			C[i][j]=(C[i-1][j]+C[i-1][j-1])%mod;
		}
	}
	while (T--) {
		ll n,m;
		cin >> n >> m;
		C2[0]=1;
		vector<ll> vct;
		for (ll i=1;i<=n;i++){
			vct.push_back(m-i+1);
			ll z=i;
			for (ll &j:vct){
				if (z==1)break;
				ll g=__gcd(j,z);
				j/=g,z/=g;
			}
			C2[i]=1;
			for (ll j:vct)C2[i]*=j,C2[i]%=mod;
		}
		ll ans=0;
		
		
		for (ll i=1;i<=n;i++){
			dp[0][0]=1;
			for(ll j=0;j<=min(n/(i+1),m);j++){
				for (ll k=1;k<=n;k++){
					dp[j][k]=(dp[j][k-1]*j%mod+(k>=i+1&&j?dp[j-1][k-i-1]*C[k-1][i]%mod*j%mod:0))%mod;
				}
				ll sm=0;
				pw[0]=1;
				for (ll i=1;i<=n;i++)pw[i]=pw[i-1]*(m-j)%mod;
				for (ll k=0;k<=n;k++){
					sm+=dp[j][k]*C[n][k]%mod*pw[n-k]%mod;
					sm%=mod;
				}
				if (j&1){
					ans-=sm*C2[j]%mod;
				}else{
					ans+=sm*C2[j]%mod;
				}
//				cout<<"!"<<sm<< endl;
				ans+=mod;
				ans%=mod;
			}
//			cout<< ans<<"\n";
		}
		pw[0]=1;
		for (ll i=1;i<=n;i++)pw[i]=pw[i-1]*m%mod;
		cout<< ((n+1)*pw[n]%mod-ans+mod)%mod<<"\n";
	}
	return 0;
}

/*
                                                                
 ■■■■■     ■■      ■■■     ■■■   ■    ■     ■     ■■■■    ■■■■  
 ■   ■■    ■■     ■  ■■   ■  ■■  ■    ■    ■■     ■  ■■  ■■  ■  
 ■    ■    ■■    ■    ■  ■    ■   ■  ■    ■■■    ■■  ■■  ■   ■■ 
 ■    ■    ■■    ■    ■  ■    ■   ■  ■     ■■    ■   ■■      ■■ 
 ■    ■    ■■    ■       ■         ■■      ■■        ■■      ■  
 ■   ■■    ■■    ■  ■■■  ■  ■■■    ■■      ■■       ■■     ■■■  
 ■■■■■     ■■    ■    ■  ■    ■    ■■      ■■      ■■        ■■ 
 ■         ■■    ■    ■  ■    ■    ■■      ■■     ■■          ■ 
 ■         ■■    ■    ■  ■    ■    ■■      ■■     ■      ■   ■■ 
 ■         ■■    ■■  ■■  ■■  ■■    ■■      ■■    ■       ■■  ■■ 
 ■         ■■      ■■■■    ■■■■    ■■      ■■    ■■■■■■   ■■■■  
*/

詳細信息

Test #1:

score: 100
Accepted
time: 3ms
memory: 12584kb

input:

3 123456789
3 2
5 5
7 7

output:

18
7145
2066323

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 6ms
memory: 12588kb

input:

100 2
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0

result:

ok 100 lines

Test #3:

score: 0
Accepted
time: 6ms
memory: 11740kb

input:

100 3
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
0
1
2
0
1
2
0
1
2
0
0
2
0
0
2
0
0
2
0
0
0
0
0
0
0
0
0
0
1
2
0
1
2
0
1
2
0
1
2
2
0
2
2
0
2
2
0
2
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
1
2
2
0
2
2
0
2
2
0
2
0
0
0
0
0
0
0
0
0
0
1
2
0
1
2
0
1
2
0
1

result:

ok 100 lines

Test #4:

score: 0
Accepted
time: 3ms
memory: 12840kb

input:

100 4
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
3
0
1
2
3
0
1
2
2
2
0
0
2
2
0
0
2
2
3
2
3
0
3
2
3
0
3
2
0
0
0
0
0
0
0
0
0
0
1
2
3
0
1
2
3
0
1
2
2
0
2
0
2
0
2
0
2
0
3
0
3
0
3
0
3
0
3
0
0
0
0
0
0
0
0
0
0
0
1
2
3
0
1
2
3
0
1
2
2
0
2
0
2
0
2
0
2
0

result:

ok 100 lines

Test #5:

score: 0
Accepted
time: 6ms
memory: 12520kb

input:

100 5
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
3
4
0
1
2
3
4
0
2
1
2
0
0
2
1
2
0
0
3
3
1
3
0
3
3
1
3
0
4
4
2
4
0
4
4
2
4
0
0
0
0
0
0
0
0
0
0
0
1
2
3
4
0
1
2
3
4
0
2
3
3
2
0
2
3
3
2
0
3
4
1
2
0
3
4
1
2
0
4
4
4
4
0
4
4
4
4
0
0
0
0
0
0
0
0
0
0
0

result:

ok 100 lines

Test #6:

score: 0
Accepted
time: 0ms
memory: 13168kb

input:

100 6
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
3
4
5
0
1
2
3
4
2
0
0
2
0
0
2
0
0
2
3
0
3
0
3
0
3
0
3
0
4
2
0
4
2
0
4
2
0
4
5
2
3
2
5
0
5
2
3
2
0
0
0
0
0
0
0
0
0
0
1
0
3
4
3
0
1
0
3
4
2
2
0
2
2
0
2
2
0
2
3
0
3
0
3
0
3
0
3
0
4
2
0
4
2
0
4
2
0
4

result:

ok 100 lines

Test #7:

score: 0
Accepted
time: 3ms
memory: 13332kb

input:

100 7
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
3
4
5
6
0
1
2
3
2
6
5
6
2
0
0
2
6
5
3
4
2
3
6
3
0
3
4
2
4
2
3
5
2
5
0
4
2
3
5
5
3
6
5
4
0
5
5
3
6
0
6
1
1
6
0
6
0
6
0
0
0
0
0
0
0
0
0
0
1
2
3
4
5
6
0
1
2
3
2
1
4
4
1
2
0
2
1
4
3
3
4
3
4
4
0
3
3
4

result:

ok 100 lines

Test #8:

score: 0
Accepted
time: 3ms
memory: 11768kb

input:

100 8
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
3
4
5
6
7
0
1
2
2
6
4
4
6
2
0
0
2
6
3
2
3
4
3
6
3
0
3
2
4
4
0
0
4
4
0
0
4
4
5
6
3
4
1
2
7
0
5
6
6
4
6
0
6
4
6
0
6
4
7
4
3
0
7
4
3
0
7
4
0
0
0
0
0
0
0
0
0
0
1
6
3
4
5
2
7
0
1
6
2
4
6
0
2
4
6
0
2
4

result:

ok 100 lines

Test #9:

score: 0
Accepted
time: 0ms
memory: 12340kb

input:

100 9
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 2...

output:

1
2
3
4
5
6
7
8
0
1
2
6
3
2
3
6
2
0
0
2
3
0
6
0
6
3
6
3
0
3
4
8
3
4
5
6
4
2
0
4
5
2
0
2
8
0
8
5
0
5
6
0
0
6
0
0
6
0
0
6
7
3
6
1
3
3
4
3
0
7
8
8
6
5
8
3
2
8
0
8
0
0
0
0
0
0
0
0
0
0
1
8
3
4
2
6
7
5
0
1

result:

ok 100 lines

Test #10:

score: 0
Accepted
time: 6ms
memory: 13640kb

input:

100 10
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 ...

output:

1
2
3
4
5
6
7
8
9
0
2
6
2
0
0
2
6
2
0
0
3
8
1
8
5
8
3
6
3
0
4
4
2
4
0
4
4
2
4
0
5
0
5
0
5
0
5
0
5
0
6
2
8
4
0
6
2
8
4
0
7
8
3
2
5
2
3
8
7
0
8
4
6
2
0
8
4
6
2
0
9
4
9
4
5
4
9
4
9
0
0
0
0
0
0
0
0
0
0
0

result:

ok 100 lines

Test #11:

score: 0
Accepted
time: 5ms
memory: 12076kb

input:

100 11
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
6 10
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 10
8 1
8 ...

output:

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

result:

ok 100 lines

Test #12:

score: 0
Accepted
time: 738ms
memory: 17284kb

input:

10 972033073
576 523187654
758 588616188
30 532959085
476 481773028
573 76725430
520 142462406
865 820120297
687 526533288
913 38106557
67 924529654

output:

259748390
909910217
708973357
300073565
463921261
889897372
587262932
255642402
868975954
14589849

result:

ok 10 lines

Test #13:

score: 0
Accepted
time: 946ms
memory: 17544kb

input:

10 922366485
846 278501607
683 609355362
44 978777279
545 730718412
926 323835432
883 761846029
623 408215612
989 588832935
449 743830620
259 183431187

output:

461786112
672633342
164805246
547995105
9661617
154501063
370848893
402005970
886523490
435107511

result:

ok 10 lines

Test #14:

score: 0
Accepted
time: 920ms
memory: 17384kb

input:

10 13890975
949 837425969
667 981449995
991 564074312
501 604745038
593 640307170
128 408163542
80 976891742
930 710947599
852 333118419
250 333252788

output:

3898759
9290500
7087084
4913904
196250
1746549
9627740
8673120
10274253
10549775

result:

ok 10 lines

Test #15:

score: 0
Accepted
time: 499ms
memory: 17516kb

input:

10 105576445
649 937885257
141 713063090
253 716966251
845 330657011
347 664392407
810 50478969
389 530582574
228 199722046
85 256258366
605 3721959

output:

22721419
27962190
85541228
53950260
35288938
100176945
86409840
102331663
55591445
14790745

result:

ok 10 lines

Test #16:

score: 0
Accepted
time: 650ms
memory: 17284kb

input:

10 445185474
268 687201814
929 296077349
690 202741564
372 661889855
442 989604795
367 456833096
702 862601129
795 37538865
556 131444040
108 645857776

output:

39577672
390323147
423333756
49417686
12978114
278291170
60346062
410583855
68429394
296833176

result:

ok 10 lines

Test #17:

score: 0
Accepted
time: 898ms
memory: 16404kb

input:

10 265384486
870 503808438
959 733458117
126 226376632
979 205878607
747 270352323
339 384431347
373 659485098
597 832514575
832 906898547
12 869891031

output:

54820154
83262107
48675762
32938269
169458409
153632065
105152812
48645927
29870948
83831862

result:

ok 10 lines

Test #18:

score: 0
Accepted
time: 631ms
memory: 17356kb

input:

10 869896294
256 326197921
496 115501273
861 238744067
581 600444623
619 536213251
89 898877607
136 353575223
860 349472278
491 770026371
668 622723560

output:

678111040
344947200
90686837
157367547
295943299
25262829
81930384
532341712
23048077
475131428

result:

ok 10 lines

Test #19:

score: -100
Time Limit Exceeded

input:

10 692092859
831 647975618
792 737778459
392 768554014
854 612888229
31 148093584
793 559010229
970 237393805
339 914914862
831 979073722
988 738224088

output:

324659472
16793498
421391172
416475848
59704753
347151224
415078841
680610884
397373492

result: