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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#410981#8150. XOR SumsycqwqAC ✓120ms11568kbC++141.2kb2024-05-14 19:22:452024-05-14 19:22:47

Judging History

你现在查看的是最新测评结果

  • [2024-05-14 19:22:47]
  • 评测
  • 测评结果:AC
  • 用时:120ms
  • 内存:11568kb
  • [2024-05-14 19:22:45]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int mod=1e9+7,maxn=25;
int f[65][1035][20],n,m,K,C[maxn][maxn];

signed main()
{
	cin>>n>>m>>K;
	f[60][0][K]=1;
	C[0][0]=1;
	for(int i=1;i<=K;i++)
	{
		C[i][0]=1;
		for(int j=1;j<=K;j++)
			C[i][j]=(C[i-1][j-1]+C[i-1][j])%mod;
	}
//	cerr<<"OK\n";
	for(int i=60;i>0;i--)
	{
		for(int j=0;j<=1024;j++)
		{
			for(int k=0;k<=K;k++)
			{
				if(f[i][j][k]==0)
					continue;
				for(int t=0;t<=K;t++)
				{
					int tarj=n>>i-1&1;
					tarj+=j<<1;
					int now=t*(K-t);
					tarj-=now;
					if(tarj<0||tarj>1024)
						continue; 
//					cerr<<i<<' '<<j<<' '<<k<<'\n';
					if((1ll<<i-1&m)==0)
					{
						if(K-k<t)
							continue;
						(f[i-1][tarj][k]+=C[K-k][t]*f[i][j][k]%mod)%=mod;
						// cerr<<i<<' '<<K-k<<' '<<C[K-k][t]*f[i][j][k]<<' '<<f[i-1][tarj][k]<<"QWQ\n";
//						cerr<<"OK\n";
						continue;
					}
					for(int l=0;l<=k;l++)
					{
						if(l+K-k<t||l>t)
							continue;
						(f[i-1][tarj][l]+=C[k][l]*C[K-k][t-l]%mod*f[i][j][k]%mod)%=mod;
//						cerr<<l<<' '<<f[i-1][tarj][l]<<' '<<C[k][l]<<' '<<C[K-k][t-l]<<'\n';
					}
				}
			}
		}
	}
	int s=0;
	for(int i=0;i<=K;i++)
		(s+=f[0][0][i])%=mod;
	cout<<s;
	return 0;
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3944kb

input:

6 2 3

output:

12

result:

ok 1 number(s): "12"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3936kb

input:

30 6 5

output:

1520

result:

ok 1 number(s): "1520"

Test #3:

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

input:

0 0 1

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 1ms
memory: 3880kb

input:

0 0 2

output:

1

result:

ok 1 number(s): "1"

Test #5:

score: 0
Accepted
time: 1ms
memory: 3732kb

input:

0 1145141919 2

output:

145141913

result:

ok 1 number(s): "145141913"

Test #6:

score: 0
Accepted
time: 2ms
memory: 5868kb

input:

0 0 18

output:

1

result:

ok 1 number(s): "1"

Test #7:

score: 0
Accepted
time: 1ms
memory: 3736kb

input:

0 12412414 18

output:

12412415

result:

ok 1 number(s): "12412415"

Test #8:

score: 0
Accepted
time: 23ms
memory: 11568kb

input:

32071009996106 682053093123 12

output:

443207413

result:

ok 1 number(s): "443207413"

Test #9:

score: 0
Accepted
time: 1ms
memory: 3900kb

input:

35533005762427 688386210611 9

output:

0

result:

ok 1 number(s): "0"

Test #10:

score: 0
Accepted
time: 64ms
memory: 9556kb

input:

35533005762427 688386210611 18

output:

132815685

result:

ok 1 number(s): "132815685"

Test #11:

score: 0
Accepted
time: 120ms
memory: 9340kb

input:

12412412412412 549755813887 18

output:

769139144

result:

ok 1 number(s): "769139144"

Test #12:

score: 0
Accepted
time: 50ms
memory: 11456kb

input:

12412412412412 549755813887 17

output:

256540093

result:

ok 1 number(s): "256540093"

Test #13:

score: 0
Accepted
time: 37ms
memory: 11512kb

input:

12412412412412 549755813887 15

output:

661919152

result:

ok 1 number(s): "661919152"

Test #14:

score: 0
Accepted
time: 19ms
memory: 9336kb

input:

8213830533897 180838478436 12

output:

960275439

result:

ok 1 number(s): "960275439"

Test #15:

score: 0
Accepted
time: 51ms
memory: 11344kb

input:

8213830533897 180838478436 18

output:

794870059

result:

ok 1 number(s): "794870059"

Test #16:

score: 0
Accepted
time: 2ms
memory: 3868kb

input:

56737445336495 759179417237 12

output:

0

result:

ok 1 number(s): "0"

Test #17:

score: 0
Accepted
time: 57ms
memory: 9688kb

input:

56737445336495 759179417237 18

output:

302105482

result:

ok 1 number(s): "302105482"

Test #18:

score: 0
Accepted
time: 15ms
memory: 9848kb

input:

56737445336495 759179417237 15

output:

0

result:

ok 1 number(s): "0"

Test #19:

score: 0
Accepted
time: 3ms
memory: 9528kb

input:

12412412412412 274877906944 18

output:

430003400

result:

ok 1 number(s): "430003400"

Test #20:

score: 0
Accepted
time: 16ms
memory: 9516kb

input:

32412412412412 274877906944 18

output:

657686236

result:

ok 1 number(s): "657686236"

Test #21:

score: 0
Accepted
time: 1ms
memory: 3692kb

input:

562949953421311 549755813887 18

output:

0

result:

ok 1 number(s): "0"

Test #22:

score: 0
Accepted
time: 1ms
memory: 3688kb

input:

985162418487295 549755813887 18

output:

0

result:

ok 1 number(s): "0"

Test #23:

score: 0
Accepted
time: 0ms
memory: 3788kb

input:

985162418487295 962072674303 18

output:

0

result:

ok 1 number(s): "0"

Test #24:

score: 0
Accepted
time: 110ms
memory: 9740kb

input:

35184372088831 962072674303 18

output:

665848241

result:

ok 1 number(s): "665848241"

Extra Test:

score: 0
Extra Test Passed