class Solution {
public:
/**
*
* @param arr int整型vector
* @return int整型
*/
int Answerofjudge(vector<int>& arr) {
// write code here
double mid;
int n=arr.size();
sort(arr.begin(),arr.end());
if(n%2==0) mid=1.0*(arr[n/2]+arr[n/2-1])/2;
else mid=arr[n/2];
double cha=0.0;
for(int i=0;i<n;i++){
cha+=(arr[i]-mid);
}
if(cha>0) return -1;
else if(cha<0) return 1;
else return 0;
}
};