Submission #163183

#TimeUsernameProblemLanguageResultExecution timeMemory
163183kostia244Rice Hub (IOI11_ricehub)C++17
100 / 100
51 ms6520 KiB
#include "ricehub.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
ll sumlo = 0, sumhi = 0;
multiset<ll> lo, hi;
ll eval() {
	ll med = *lo.rbegin();
	return (lo.size() * med - sumlo) + (sumhi - hi.size() * med);
}
void balance() {
	while (lo.size() < hi.size()) {
		sumhi -= *hi.begin();
		sumlo += *hi.begin();
		lo.insert(*hi.begin());
		hi.erase(hi.begin());
	}
}
void pop() {
	sumlo -= *lo.begin();
	lo.erase(lo.begin());
	balance();
}
void push(ll x) {
	hi.insert(x);
	sumhi += x;
	balance();
}
int besthub(int R, int L, int X[], long long B) {
	ll ans = 0;
	for(int i = 0; i < R; i++) {
		push(X[i]);
		while(eval()>B) pop();
		ans = max(ans, (ll)lo.size()+(ll)hi.size());
	}
	return ans;
}
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