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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#20583#2492. Hash Function_silhouette_AC ✓2082ms14400kbC++142.0kb2022-02-16 18:23:142022-05-03 10:39:35

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2022-05-03 10:39:35]
  • 评测
  • 测评结果:AC
  • 用时:2082ms
  • 内存:14400kb
  • [2022-02-16 18:23:14]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int Max_N=16,Mod=114514;
int n,H,N,M,Num,lin[Mod+5];
long long A[Max_N<<1],B[Max_N<<1],R[Max_N<<1],C[Max_N<<1],a1[1<<19],a2[1<<7],a3[1<<7],c1[1<<19],c2[1<<7],c3[1<<7];
vector<int> S1,S2,S3;
struct Edge{ int Next,val1; long long val2; } e[1<<26];
void Add(int x,long long val){
	int h=x%Mod;
	for(int i=lin[h];i;i=e[i].Next)
	 if(e[i].val1==x) return;
	e[++Num].Next=lin[h]; lin[h]=Num; e[Num].val1=x; e[Num].val2=val;
}
long long Ask(int x){
	int h=x%Mod;
	for(int i=lin[h];i;i=e[i].Next)
	 if(e[i].val1==x) return e[i].val2;
	return -1;
}
int main(){
	scanf("%d%d",&n,&H); 
	N=n<<1; M=(1<<(N-1))-1;
	for(int i=0;i<N;i++)
	 if(i<n) B[i]=(1ll<<i)^(1ll<<(2*i+1));
	 else B[i]=(1ll<<i)^(1ll<<(4*n-2*i-2));
	for(int i=0;i<N;i++) R[i]=B[(i+1)%N];
	for(int i=0;i<N;i++) C[i]=B[i]^R[i];
	for(int i=0;i<N;i++)
	 for(int j=0;j<N;j++)
	  if((C[j]>>i)&1) A[i]|=1ll<<j;
	for(int i=0;i<N;i++){
		int Min=N-1,Max=0;
		for(int j=0;j<N;j++)
		 if((1ll<<j)&A[i]) 
		  Min=min(Min,j),
		  Max=max(Max,j);
		if(Max<n) S2.push_back(i);
		else if(Min>=n) S3.push_back(i);
		else S1.push_back(i);
	} 
	for(int i=0;i<1<<S1.size();i++){
		for(int j=0;j<S1.size();j++)
		 if((1ll<<j)&i) a1[i]^=1ll<<S1[j],c1[i]^=A[S1[j]];
	}
	for(int i=0;i<1<<S2.size();i++){
		for(int j=0;j<S2.size();j++)
		 if((1ll<<j)&i) a2[i]^=1ll<<S2[j],c2[i]^=A[S2[j]];
	}
	for(int i=0;i<1<<S3.size();i++){
		for(int j=0;j<S3.size();j++)
		 if((1ll<<j)&i) a3[i]^=1ll<<S3[j],c3[i]^=A[S3[j]];
	}
	int s=(1ll<<N)-(1ll<<n);
	for(int i=0;i<1<<S1.size();i++){
		for(int j=0;j<1<<S2.size();j++){
			int val=(239ll*a2[j]+153ll*((c1[i]^c2[j])&((1ll<<n)-1)))%M;
			Add(val,a2[j]);
		}
		for(int j=0;j<1<<S3.size();j++){
			int val=(H-(239ll*(a1[i]+a3[j])+153ll*((c1[i]^c3[j])&((1ll<<N)-(1ll<<n))))%M+M)%M;
			unsigned int ans=Ask(val);
			if(ans!=-1){ printf("%u\n",ans^a1[i]^a3[j]); return 0; }
		}
		Num=0;
		for(int j=0;j<1<<S2.size();j++)
		 lin[(239ll*a2[j]+153ll*((c1[i]^c2[j])&((1ll<<n)-1)))%M%Mod]=0;
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 3ms
memory: 3812kb

input:

4 83

output:

13

result:

ok good solution

Test #2:

score: 0
Accepted
time: 4ms
memory: 4444kb

input:

10 497091

output:

153014

result:

ok good solution

Test #3:

score: 0
Accepted
time: 3ms
memory: 5828kb

input:

4 55

output:

73

result:

ok good solution

Test #4:

score: 0
Accepted
time: 307ms
memory: 9680kb

input:

15 444650548

output:

377677832

result:

ok good solution

Test #5:

score: 0
Accepted
time: 175ms
memory: 8184kb

input:

14 114355996

output:

119238393

result:

ok good solution

Test #6:

score: 0
Accepted
time: 38ms
memory: 13312kb

input:

16 0

output:

0

result:

ok good solution

Test #7:

score: 0
Accepted
time: 1ms
memory: 5836kb

input:

3 22

output:

8

result:

ok good solution

Test #8:

score: 0
Accepted
time: 4ms
memory: 5976kb

input:

8 8319

output:

15407

result:

ok good solution

Test #9:

score: 0
Accepted
time: 21ms
memory: 6616kb

input:

12 7629490

output:

11766463

result:

ok good solution

Test #10:

score: 0
Accepted
time: 1ms
memory: 5912kb

input:

2 2

output:

3

result:

ok good solution

Test #11:

score: 0
Accepted
time: 35ms
memory: 14052kb

input:

16 0

output:

0

result:

ok good solution

Test #12:

score: 0
Accepted
time: 30ms
memory: 12680kb

input:

16 0

output:

0

result:

ok good solution

Test #13:

score: 0
Accepted
time: 21ms
memory: 13980kb

input:

16 0

output:

0

result:

ok good solution

Test #14:

score: 0
Accepted
time: 7ms
memory: 6424kb

input:

11 1086647

output:

1875946

result:

ok good solution

Test #15:

score: 0
Accepted
time: 5ms
memory: 6404kb

input:

11 188671

output:

393405

result:

ok good solution

Test #16:

score: 0
Accepted
time: 3ms
memory: 6396kb

input:

11 2028522

output:

424106

result:

ok good solution

Test #17:

score: 0
Accepted
time: 58ms
memory: 6872kb

input:

13 23601796

output:

40518521

result:

ok good solution

Test #18:

score: 0
Accepted
time: 3ms
memory: 6060kb

input:

8 29405

output:

7325

result:

ok good solution

Test #19:

score: 0
Accepted
time: 0ms
memory: 5888kb

input:

7 2218

output:

3174

result:

ok good solution

Test #20:

score: 0
Accepted
time: 1ms
memory: 5824kb

input:

7 432

output:

662

result:

ok good solution

Test #21:

score: 0
Accepted
time: 3ms
memory: 6416kb

input:

11 899191

output:

570326

result:

ok good solution

Test #22:

score: 0
Accepted
time: 3ms
memory: 5912kb

input:

5 494

output:

281

result:

ok good solution

Test #23:

score: 0
Accepted
time: 4ms
memory: 5972kb

input:

8 13862

output:

12212

result:

ok good solution

Test #24:

score: 0
Accepted
time: 11ms
memory: 6420kb

input:

11 899027

output:

1622100

result:

ok good solution

Test #25:

score: 0
Accepted
time: 4ms
memory: 5920kb

input:

8 7446

output:

49853

result:

ok good solution

Test #26:

score: 0
Accepted
time: 3ms
memory: 5824kb

input:

3 12

output:

6

result:

ok good solution

Test #27:

score: 0
Accepted
time: 4ms
memory: 5920kb

input:

8 6258

output:

18666

result:

ok good solution

Test #28:

score: 0
Accepted
time: 309ms
memory: 8732kb

input:

15 191474555

output:

411455767

result:

ok good solution

Test #29:

score: 0
Accepted
time: 1ms
memory: 5840kb

input:

3 17

output:

20

result:

ok good solution

Test #30:

score: 0
Accepted
time: 291ms
memory: 9408kb

input:

15 161474861

output:

318717104

result:

ok good solution

Test #31:

score: 0
Accepted
time: 4ms
memory: 6352kb

input:

10 180816

output:

81147

result:

ok good solution

Test #32:

score: 0
Accepted
time: 4ms
memory: 5796kb

input:

4 116

output:

81

result:

ok good solution

Test #33:

score: 0
Accepted
time: 343ms
memory: 12488kb

input:

16 1196684556

output:

567748713

result:

ok good solution

Test #34:

score: 0
Accepted
time: 235ms
memory: 13992kb

input:

16 1087033358

output:

458416341

result:

ok good solution

Test #35:

score: 0
Accepted
time: 809ms
memory: 12844kb

input:

16 2112546660

output:

1321210677

result:

ok good solution

Test #36:

score: 0
Accepted
time: 1808ms
memory: 13140kb

input:

16 130507716

output:

3358127644

result:

ok good solution

Test #37:

score: 0
Accepted
time: 552ms
memory: 12568kb

input:

16 1531459999

output:

1004811660

result:

ok good solution

Test #38:

score: 0
Accepted
time: 627ms
memory: 14400kb

input:

16 1905706077

output:

1437054237

result:

ok good solution

Test #39:

score: 0
Accepted
time: 1313ms
memory: 13472kb

input:

16 1584950777

output:

2565491169

result:

ok good solution

Test #40:

score: 0
Accepted
time: 149ms
memory: 13284kb

input:

16 1112585098

output:

312451907

result:

ok good solution

Test #41:

score: 0
Accepted
time: 768ms
memory: 13640kb

input:

16 1527899944

output:

1488817943

result:

ok good solution

Test #42:

score: 0
Accepted
time: 1646ms
memory: 14008kb

input:

16 1234237908

output:

3150139837

result:

ok good solution

Test #43:

score: 0
Accepted
time: 260ms
memory: 13004kb

input:

16 922629865

output:

237178966

result:

ok good solution

Test #44:

score: 0
Accepted
time: 2082ms
memory: 13728kb

input:

16 2079610945


output:

4169495274

result:

ok good solution

Test #45:

score: 0
Accepted
time: 1052ms
memory: 12916kb

input:

16 125431469

output:

2028551108

result:

ok good solution

Test #46:

score: 0
Accepted
time: 1100ms
memory: 13588kb

input:

16 425515915

output:

1873120589

result:

ok good solution

Test #47:

score: 0
Accepted
time: 303ms
memory: 14360kb

input:

16 882748949

output:

873576051

result:

ok good solution

Test #48:

score: 0
Accepted
time: 166ms
memory: 12960kb

input:

16 1647578253

output:

45770769

result:

ok good solution

Test #49:

score: 0
Accepted
time: 1399ms
memory: 13284kb

input:

16 1687169193

output:

3025007262

result:

ok good solution

Test #50:

score: 0
Accepted
time: 1134ms
memory: 13740kb

input:

16 702542621

output:

2485649646

result:

ok good solution