学步园

#include<cstdio>
int n,s,ans;
int main(){
	while(scanf("%d",&n)!=EOF){
		ans=0;
		for(int i=1;i<=n;i++){
			scanf("%d",&s);
			ans^=s;
		}
		if(ans)printf("Yes\n");
		else printf("No\n");
	}
	return 0;
}