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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#470781#1436. Split in Setsyqh2025WA 1ms3852kbC++141.7kb2024-07-10 16:24:492024-07-10 16:24:50

Judging History

你现在查看的是最新测评结果

  • [2024-07-10 16:24:50]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3852kb
  • [2024-07-10 16:24:49]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N=1e5+10,mod=1e9+7;
int ksm(int x,int y){int ans=1;while(y){if(y&1)ans=ans*x%mod;x=x*x%mod;y>>=1;}return ans;}
int inv(int x){return ksm(x,mod-2);}
int n,k,a[N];
int bit(int x,int y){return (x>>y)&1;}
int jc[N],invjc[N];
void init(){
	jc[0]=1;for(int i=1;i<=n;i++)jc[i]=jc[i-1]*i%mod;
	invjc[n]=inv(jc[n]);
	for(int i=n-1;i>=0;i--)invjc[i]=invjc[i+1]*(i+1)%mod;
}
int C(int n,int m){
	if(n<m)return 0;
	return jc[n]*invjc[m]%mod*invjc[n-m]%mod;
}
signed main(){
	scanf("%lld%lld",&n,&k);
	init();
	for(int i=1;i<=n;i++)scanf("%lld",&a[i]);
	int ans1=0,ans2=1;
	for(int t=30;t>=0;t--){
		int cnt=0;
		for(int i=1;i<=n;i++)cnt+=bit(a[i],t);
		if(!cnt){
			if(t)continue;
			int sum=0;
			for(int i=0;i<=k;i++){
				if((k-i)&1)sum=(sum-C(k,i)*ksm(i,n)%mod+mod)%mod;
				else sum=(sum+C(k,i)*ksm(i,n)%mod)%mod;
			}
			ans2=ans2*sum%mod;
			continue;
		}
		if(cnt<=k-1){
			vector<int>ve;
			for(int i=1;i<=n;i++)if(bit(a[i],t))ans1+=a[i];else ve.push_back(a[i]);
			n=ve.size();for(int i=1;i<=n;i++)a[i]=ve[i-1];
			ans2=ans2*jc[k]%mod*invjc[k-cnt]%mod;
			k-=cnt;
		}
		else{
			int x=-1;
			for(int i=1;i<=n;i++)if(!bit(a[i],t)){
				if(x==-1)x=a[i];else x&=a[i];
			}
			vector<int>ve;if(x!=-1)ve.push_back(x);
			for(int i=1;i<=n;i++)if(bit(a[i],t))ve.push_back(a[i]^(1<<t));
			n=ve.size();for(int i=1;i<=n;i++)a[i]=ve[i-1];
			ans1+=(k-1)*(1<<t);
			if(x==-1)ans1+=1<<t;
		}
//		cout<<t<<":\n";
//		cout<<"n k:"<<n<<" "<<k<<endl;
//		for(int i=1;i<=n;i++)cout<<a[i]<<" ";
//		cout<<endl<<"ans1 ans2:"<<ans1<<" "<<ans2<<endl;
//		cout<<endl;
	}
	printf("%lld %lld",ans1,ans2);
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3820kb

input:

3 2
4 7 5

output:

11 2

result:

ok 2 tokens

Test #2:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

4 1
44 47 74 77

output:

8 1

result:

ok 2 tokens

Test #3:

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

input:

4 4
44 47 74 77

output:

242 24

result:

ok 2 tokens

Test #4:

score: -100
Wrong Answer
time: 1ms
memory: 3852kb

input:

1000 975
633065 7087 25267 3940676 618039 1695 2043 728466935 3498 13604984 4 99 119488 151315 12 32 52705062 26815 1902279 33952 480604 390647001 60 1 12566875 7591859 6 119892 7829822 2129 4 11644639 17 33200 5330 338 2 9 6862 3781 148087 57 198 13224999 10493180 1 5755424 216 1757297 210 1002623 ...

output:

35467198613 152712092

result:

wrong answer 2nd words differ - expected: '671056390', found: '152712092'