20 lines
292 B
C++
20 lines
292 B
C++
#include<cstdio>
|
|
#include<algorithm>
|
|
using namespace std;
|
|
int T,n,sg,x;
|
|
int main()
|
|
{
|
|
#ifdef local
|
|
freopen("pro.in","r",stdin);
|
|
#endif
|
|
scanf("%d",&T);
|
|
while(T-->0)
|
|
{
|
|
scanf("%d",&n);
|
|
n--; scanf("%d",&sg);
|
|
while(n-->0) { scanf("%d",&x); sg^=x; }
|
|
puts(sg?"Yes":"No");
|
|
}
|
|
return 0;
|
|
}
|