제출 #16818

#제출 시각아이디문제언어결과실행 시간메모리
16818kdh9949속이기 (GA5_fake)C++98
0 / 100
0 ms1084 KiB
#include<stdio.h>
int n,k,xorsum,sum,min;
int main()
{
  scanf("%d",&n);
  for(int i=0;i<n;i++){
  	scanf("%d",&k);
    xorsum^=k;
    sum+=k;
    if(min<k)min=k;
  }
  printf("%d",xorsum?-1:sum-min);
}
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