65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
#include<iostream>
|
|
#include<cstdio>
|
|
#include<cstring>
|
|
#include<string>
|
|
#include<algorithm>
|
|
#include<map>
|
|
#include<queue>
|
|
#include<stack>
|
|
#include<set>
|
|
#include<cmath>
|
|
#include<vector>
|
|
#include<bitset>
|
|
#define inf 0x3f3f3f3f
|
|
#define Inf 0x3FFFFFFFFFFFFFFFLL
|
|
#define eps 1e-6
|
|
#define pi acos(-1.0)
|
|
using namespace std;
|
|
typedef long long ll;
|
|
const int maxn = 1000 + 10;
|
|
ll a[maxn];
|
|
int main()
|
|
{
|
|
int t;
|
|
scanf("%d",&t);
|
|
while(t--)
|
|
{
|
|
int n;
|
|
scanf("%d",&n);
|
|
for(int i = 0;i < n;++i)
|
|
scanf("%I64d",&a[i]);
|
|
if(n > 40)
|
|
{
|
|
puts("Yes");
|
|
continue;
|
|
}
|
|
int x = 0;
|
|
for(ll i = 0;i < 40;++i)
|
|
{
|
|
int p = -1;
|
|
for(ll j = x;j < n;++j)
|
|
{
|
|
if((a[j]>>i) & 1)
|
|
{
|
|
p = j;
|
|
break;
|
|
}
|
|
}
|
|
if(p == -1) continue;
|
|
swap(a[x],a[p]);
|
|
for(int j = x + 1;j < n;++j)
|
|
if((a[j]>>i) & 1)
|
|
a[j] ^= a[x];
|
|
x++;
|
|
}
|
|
int cnt = 0;
|
|
for(int i = 0;i < n;++i)
|
|
if(a[i]) cnt++;
|
|
if(cnt < n)
|
|
puts("Yes");
|
|
else
|
|
puts("No");
|
|
}
|
|
return 0;
|
|
}
|