Submission #1688067

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Source Code Expand

#include<iostream>
using namespace std;

int main(){

  int n, a[110]={}, cnt=0, sum=0;

  cin>>n;
  for(int i=1;i<=n;i++){
    int x;
    cin>>x;
    a[i]=a[i-1]+x;
    sum+=x;
  }

  if(sum%n){
    cout<<-1<<endl;
    return 0;
  }else sum/=n;

  for(int i=1;i<=n;i++){
    if(a[i]!=sum*i) cnt++;
  }

  cout<<cnt<<endl;

  return 0;
}

Submission Info

Judge Result