27 lines
626 B
C++
27 lines
626 B
C++
#include <iostream>
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#include <cstdio>
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#include <algorithm>
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using namespace std;
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__int64 f[2][1048600];
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int a[45];
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int main()
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{
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int t,ii,n,i,j,Min,m;
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__int64 ans;
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scanf("%d",&t);
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for (ii=1;ii<=t;ii++)
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{
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scanf("%d%d",&n,&m);
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for (i=1;i<=n;i++)
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scanf("%d",&a[i]);
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memset(f,0,sizeof(f));
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f[0][0]=1;ans=0;
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for (i=1;i<=n;i++)
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for (j=0;j<1048576;j++)
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f[i%2][j]=f[(i-1)%2][j]+f[(i-1)%2][j^a[i]];
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for (i=m;i<1048576;i++)
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ans+=f[n%2][i];
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printf("Case #%d: %I64d\n",ii,ans);
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}
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}
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