ACM.2234 Matches Game http://acm.pku.cn/JudgeOnline/problem?id=2234
#include <iostream> using namespace std; int main () { int n=0; while (cin>>n) { int m=0,l=0; for (int i=0;i<n;i++) { cin >>l; m^=l; } cout <<(m?"Yes":"No")<<endl; } return 0; }
#include <iostream> using namespace std; int main () { int n=0; while (cin>>n) { int m=0,l=0; for (int i=0;i<n;i++) { cin >>l; m^=l; } cout <<(m?"Yes":"No")<<endl; } return 0; }