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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#643390#7679. Master of Both IVsw7777TL 58ms26208kbC++171023b2024-10-15 20:58:032024-10-15 20:58:03

Judging History

你现在查看的是最新测评结果

  • [2024-10-15 20:58:03]
  • 评测
  • 测评结果:TL
  • 用时:58ms
  • 内存:26208kb
  • [2024-10-15 20:58:03]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int mod=998244353;
const int N=2e5+10;
int d[60],pow2[N],rk;
void insert(int x){
	for(int i=30;i>=0;i--){
		if(x&(1<<i)){
			if(d[i]) x^=d[i];
			else{
				d[i]^=x;
				rk++;
				return;
			}
		}
	}
}
bool check(int x){
	for(int i=30;i>=0;i--){
		if(x*(1<<i)){
			if(d[i]) x^=d[i]; 
		}
	}
	return x==0;
}
vector<int> g[N];
int cnt[N];
void sol(){
	int n;cin>>n;
	for(int i=1;i<=n;i++){
		int x;cin>>x;
		cnt[x]++;
	}
	int ans=0;
	for(int i=0;i<=2*n;i++){//枚举每个结果
		int cc=0;
		memset(d,0,sizeof(d));
		rk=0;
		for(auto fac:g[i]){
			if(cnt[fac]){
				insert(fac);
				cc+=cnt[fac];
			}
		}
		if(check(i)) ans=(ans+pow2[cc-rk])%mod;
	}
	cout<<ans-1<<endl;
	for(int i=1;i<=n;i++){
		cnt[i]=0;
	}
}
int main(){
	for(int i=1;i<=2e5;i++){
		for(int j=0;j<=2e5;j+=i) g[j].push_back(i); 
	}
	pow2[0]=1;
	for(int i=1;i<=2e5;i++){
		pow2[i]=(pow2[i-1]*2)%mod;
	}
	int T;cin>>T;while(T--)sol();
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 58ms
memory: 26208kb

input:

2
3
1 2 3
5
3 3 5 1 1

output:

4
11

result:

ok 2 number(s): "4 11"

Test #2:

score: -100
Time Limit Exceeded

input:

40000
5
4 2 5 5 5
5
5 5 5 5 4
5
1 4 4 4 2
5
2 5 2 4 1
5
3 2 4 5 3
5
1 5 5 3 4
5
5 5 5 4 3
5
4 3 3 5 1
5
4 5 5 2 1
5
2 5 4 2 5
5
3 4 3 4 3
5
5 3 5 1 3
5
5 1 2 4 4
5
4 2 5 1 5
5
5 4 2 5 4
5
5 2 5 2 4
5
1 4 5 4 5
5
4 2 3 2 3
5
1 4 1 3 5
5
1 1 2 1 5
5
5 2 5 1 3
5
3 1 2 5 3
5
5 5 1 1 5
5
2 2 2 1 3
5
3 1 ...

output:

9
16
9
9
8
8
9
8
8
9
13
8
8
8
8
9
12
9
11
15
8
8
17
13
8
11
8
8
8
13
15
9
9
8
8
8
11
9
11
13
15
9
17
9
8
8
8
13
11
8
9
11
8
8
11
15
9
8
9
8
8
15
11
8
17
9
15
8
8
8
12
9
9
11
8
13
9
8
15
8
8
9
8
8
8
15
8
11
13
8
9
11
8
19
11
13
19
17
13
15
8
8
8
9
8
9
13
15
17
9
9
17
9
11
9
9
11
9
9
11
8
9
9
13
15
11...

result: