#include<iostream>using namespace std;int main(){int n;while(cin>>n){int t,sum;cin>>sum;for(int i=0;i<n-1;i++){cin>>t;sum=sum^t;}if(sum)cout<<"Yes"<<endl;elsecout<<"No"<<endl;}return 0;}
#include<iostream>using namespace std;int main(){int n;while(cin>>n){int t,sum;cin>>sum;for(int i=0;i<n-1;i++){cin>>t;sum=sum^t;}if(sum)cout<<"Yes"<<endl;elsecout<<"No"<<endl;}return 0;}名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
