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#include<iostream>
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using namespace std;
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int main()
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{
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int N,x,i,s,a;
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while(cin>>N)
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{
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s=a=0;
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for (i=0;i<N;i++)
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{
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cin>>x;
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s^=x;
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if(x>1)
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a=1;
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}
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if(a==0)
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{
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if(N%2)
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cout<<"No"<<endl;
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else
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cout<<"Yes"<<endl;
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}
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else
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{
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if(s==0)
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cout<<"No"<<endl;
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else
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cout<<"Yes"<<endl;
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}
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}
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return 0;
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}
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