/*
****
AUTHOR :- @soham01
****
*/
#include "bits/stdc++.h"
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
long long int n,k,m,s=0,c=0,i,j,f=0;
cin>>n>>k>>m;
long long int arr[n-1];
for(i=0;i<n-1;i++)
{
cin>>arr[i];
s+=arr[i];
}
c=(m*n)-s;
cout<<c<<endl;
if(s/n>=m)cout<<"0"<<endl;
else if(c>k)cout<<"-1"<<endl;
else cout<<c<<endl;
return 0;
}
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