#include<bits/stdc++.h> using namespace std; #define ll long long ll n,m; ll a[1000010]; bool check(int x) { int res=0; for(int i=0;i<n;i++) { if(a[i]>x) res+=a[i]-x; } if(res>=m) return true; else return false; } int main() { ll minn=INT_MAX,maxn=INT_MIN; cin>>n>>m; for(int i=0;i<n;i++) { cin>>a[i]; minn=min(minn,a[i]); maxn=max(maxn,a[i]); } ll l=minn,r=maxn; while(r-l>1) { ll mid=(r+l)/2; if(check(mid)) l=mid; else r=mid; } if(check(r)) cout<<r; else cout<<l; return 0; }