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#include <cstdio>
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using namespace std;
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int main()
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{
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int T,n,x,t=0;
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scanf("%d",&T);
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while(T--)
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{
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scanf("%d",&n);
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bool flag=true;
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for(int i=0; i<n; i++)
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{
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scanf("%d",&x);
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if(x%3!=0)
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flag=false;
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}
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printf("Case #%d: %s\n",++t,flag?"Yes":"No");
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}
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return 0;
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}
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