#include <bits/stdc++.h> using namespace std; bool check(int k, vector<long long>&pref, int X[], int R, long long B){ long long min_wyn = LLONG_MAX; long long n = R - k + 1; for(long long l = 1; l<=n; l++){ long long r = l + k - 1; long long m = ((l-1)+(r-1))/2; long long temp_wyn = 1LL*(m - (l-1))*X[m] - (pref[m] - pref[l-1]); temp_wyn += (pref[r] - pref[m+1]) - 1LL*(r - m - 1)*X[m]; min_wyn = min(min_wyn, temp_wyn); } if(min_wyn <= B)return true; else return false; } long long besthub(int R, int L, int X[], long long B){ vector<long long>pref(R+7, 0); for(int i = 1; i<=R; i++)pref[i] = pref[i-1] + X[i-1]; int l = 1; int r = R; int wyn = 0; while(l<=r){ int mid = (l+r)/2; if(check(mid, pref, X, R, B)){ l = mid + 1; wyn = max(wyn, mid); } else r = mid - 1; } return wyn; }