Submission #600465

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
600465	2022-07-20 22:07:27	verngutz	Discharging (NOI20_discharging)	C++17	100 / 100	183 ms	37104 KiB

Discharging

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#include <bits/stdc++.h>
#define err(args...) {}
#ifdef DEBUG
#include "_debug.cpp"
#endif
using namespace std;
using ll = long long;
using ld = long double;
template <typename T> using lim = numeric_limits<T>;
template <typename T> istream& operator>>(istream& is, vector<T>& a) { for(T& x : a) { is >> x; } return is; }
template <typename X, typename Y> istream& operator>>(istream& is, pair<X, Y>& p) { return is >> p.first >> p.second; }
template <typename Iter, typename T> int gt(Iter L, Iter R, T v) { return upper_bound(L, R, v) - L; }
template <typename Iter, typename T> int ge(Iter L, Iter R, T v) { return lower_bound(L, R, v) - L; }
template <typename Iter, typename T> int lt(Iter L, Iter R, T v) { return lower_bound(L, R, v) - L - 1; }
template <typename Iter, typename T> int le(Iter L, Iter R, T v) { return upper_bound(L, R, v) - L - 1; }
template <typename Bst, typename T> typename Bst::const_iterator gt(const Bst& bst, T v) { return bst.upper_bound(v); }
template <typename Bst, typename T> typename Bst::const_iterator ge(const Bst& bst, T v) { return bst.lower_bound(v); }
template <typename Bst, typename T> typename Bst::const_iterator lt(const Bst& bst, T v) { return bst.lower_bound(v) == bst.begin() ? bst.end() : --bst.lower_bound(v); }
template <typename Bst, typename T> typename Bst::const_iterator le(const Bst& bst, T v) { return bst.upper_bound(v) == bst.begin() ? bst.end() : --bst.upper_bound(v); }
// maintain an upper/lower hull L of lines y = mx + b
// query for y(x) such that y(x) is minimum/maximum over all lines y in L
// assumes lines are inserted in non-increasing/non-decreasing order of m
// minimization by default, call constructor with greater<ll>() for maximization
struct cht {
    struct line {
        ll m, b, intersection;
        ll eval(ll x) const { return m * x + b; }
        ll cross(const line& l) const { return (l.b - b) / (m - l.m); }
        bool operator<(const line& l) const { return m > l.m; }
        bool operator<(const ll x) const { return intersection < x; }
 
 
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