#include <iostream>#include <cstdio>#include <cstring>#include <algorithm>#include <cmath>using namespace std;typedef long long ll;const int N=1e6;inline int read(){    char c=getchar();int x=0,f=1;    while(c<‘0‘||c>‘9‘){if(c==‘-‘)f=-1;c=getchar();}    while(c>=‘0‘&&c<=‘9‘){x=x*10+c-‘0‘;c=getchar();}    return x*f;}int n,a;int main(){    //freopen("in","r",stdin);    while(scanf("%d",&n)!=EOF){        int sg=0,flag=0;        for(int i=1;i<=n;i++) a=read(),sg^=a,flag|=a>1;        if( (sg==0 && !flag) || (sg!=0 && flag) ) puts("Yes");        else puts("No");    }}