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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#688066#8150. XOR SumwsxcbAC ✓126ms6684kbC++171.3kb2024-10-29 23:05:132024-10-29 23:05:14

Judging History

你现在查看的是最新测评结果

  • [2024-10-29 23:05:14]
  • 评测
  • 测评结果:AC
  • 用时:126ms
  • 内存:6684kb
  • [2024-10-29 23:05:13]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define fi first
#define se second
typedef vector<vector<ll>> Mat;
#define int long long
const int N=2000+10,mod=1e9+7,inf=1e9+1,P=998244353;
const double pi=acos(-1.0),esp=1e-9;
const ll INF=1e18;
int n,m,k,pw[50];
int C[50][50];
map<int,int>dp[50][20];
void add(int &x,int y){
	x+=y;
	if(x>mod)x-=mod;
}
int dfs(int now,int cnt,int sum){
	
	if(now<0)return sum==0;
	if(dp[now][cnt].count(sum))return dp[now][cnt][sum];
	if(sum<0||(pw[now+1]-1)*(k/2)*(k-k/2)<sum)return 0;
	int ans=0;
	
	if((m>>now)&1)
	{
		for(int i=0;i<=cnt;i++)
		for(int j=0;j<=k-cnt;j++)
		add(ans,
		C[cnt][i]*C[k-cnt][j]%mod*
		dfs(now-1,i,sum-pw[now]*(i+j)*(k-i-j))%mod);
	}
	else
	{
		for(int i=0;i<=k-cnt;i++){
	add(ans,C[k-cnt][i]*dfs(now-1,cnt,sum-pw[now]*i*(k-i))%mod);
		}
	}
	dp[now][cnt][sum]=ans%mod;
	
	return ans%mod;
}
void solve()
{
	cin>>n>>m>>k;
	C[0][0]=1;
	pw[0]=1;
	for(int i=1;i<50;i++)pw[i]=pw[i-1]*2;
	for(int i=1;i<=k;i++){
		C[i][0]=1;
		for(int j=1;j<=i;j++)
		C[i][j]=(C[i-1][j-1]+C[i-1][j])%mod;
	}
	//cout<<(pw[41]-1)*(k/2)*(k-k/2)<<'\n';
	cout<<dfs(40*1ll,k,n)%mod<<'\n';
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    int t=1;
    //cin>>t;
    while(t--)
        solve();
    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: 0ms
memory: 3696kb

input:

6 2 3

output:

12

result:

ok 1 number(s): "12"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3712kb

input:

30 6 5

output:

1520

result:

ok 1 number(s): "1520"

Test #3:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

0 0 1

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3708kb

input:

0 0 2

output:

1

result:

ok 1 number(s): "1"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3784kb

input:

0 1145141919 2

output:

145141913

result:

ok 1 number(s): "145141913"

Test #6:

score: 0
Accepted
time: 0ms
memory: 3700kb

input:

0 0 18

output:

1

result:

ok 1 number(s): "1"

Test #7:

score: 0
Accepted
time: 0ms
memory: 3644kb

input:

0 12412414 18

output:

12412415

result:

ok 1 number(s): "12412415"

Test #8:

score: 0
Accepted
time: 7ms
memory: 4336kb

input:

32071009996106 682053093123 12

output:

443207413

result:

ok 1 number(s): "443207413"

Test #9:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

35533005762427 688386210611 9

output:

0

result:

ok 1 number(s): "0"

Test #10:

score: 0
Accepted
time: 62ms
memory: 6572kb

input:

35533005762427 688386210611 18

output:

132815685

result:

ok 1 number(s): "132815685"

Test #11:

score: 0
Accepted
time: 126ms
memory: 6684kb

input:

12412412412412 549755813887 18

output:

769139144

result:

ok 1 number(s): "769139144"

Test #12:

score: 0
Accepted
time: 30ms
memory: 4876kb

input:

12412412412412 549755813887 17

output:

256540093

result:

ok 1 number(s): "256540093"

Test #13:

score: 0
Accepted
time: 18ms
memory: 4492kb

input:

12412412412412 549755813887 15

output:

661919152

result:

ok 1 number(s): "661919152"

Test #14:

score: 0
Accepted
time: 6ms
memory: 4320kb

input:

8213830533897 180838478436 12

output:

960275439

result:

ok 1 number(s): "960275439"

Test #15:

score: 0
Accepted
time: 58ms
memory: 6488kb

input:

8213830533897 180838478436 18

output:

794870059

result:

ok 1 number(s): "794870059"

Test #16:

score: 0
Accepted
time: 0ms
memory: 3712kb

input:

56737445336495 759179417237 12

output:

0

result:

ok 1 number(s): "0"

Test #17:

score: 0
Accepted
time: 57ms
memory: 6424kb

input:

56737445336495 759179417237 18

output:

302105482

result:

ok 1 number(s): "302105482"

Test #18:

score: 0
Accepted
time: 6ms
memory: 4320kb

input:

56737445336495 759179417237 15

output:

0

result:

ok 1 number(s): "0"

Test #19:

score: 0
Accepted
time: 7ms
memory: 4628kb

input:

12412412412412 274877906944 18

output:

430003400

result:

ok 1 number(s): "430003400"

Test #20:

score: 0
Accepted
time: 11ms
memory: 5588kb

input:

32412412412412 274877906944 18

output:

657686236

result:

ok 1 number(s): "657686236"

Test #21:

score: 0
Accepted
time: 0ms
memory: 3640kb

input:

562949953421311 549755813887 18

output:

0

result:

ok 1 number(s): "0"

Test #22:

score: 0
Accepted
time: 0ms
memory: 3764kb

input:

985162418487295 549755813887 18

output:

0

result:

ok 1 number(s): "0"

Test #23:

score: 0
Accepted
time: 0ms
memory: 3696kb

input:

985162418487295 962072674303 18

output:

0

result:

ok 1 number(s): "0"

Test #24:

score: 0
Accepted
time: 125ms
memory: 6548kb

input:

35184372088831 962072674303 18

output:

665848241

result:

ok 1 number(s): "665848241"

Extra Test:

score: 0
Extra Test Passed