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- #include <bits/stdc++.h>
- using namespace std;
- #define ll long long
- #define test int t; cin>>t; while(t--)
- int main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);cout.tie(0);
- ll a[1000],c,d,i,j,k,l=1e13;
- cin>>c;
- for(i=0;i<c;i++)
- {
- cin>>a[i];
- }
- sort(a,a+c);
- for(i=a[0];i<=a[c-1];i++)
- {
- d=0;
- for(j=0;j<c;j++)
- {
- d+=(a[j]-i)*(a[j]-i);
- }
- if(d<l)
- {
- l=d;
- }
- }
- cout<<l<<endl;
- return 0;
- }
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