제출 #547516

#제출 시각아이디문제언어결과실행 시간메모리
547516LucaDantas비스킷 담기 (IOI20_biscuits)C++17
9 / 100
1148 ms1179432 KiB
#include "biscuits.h"
#include <cassert>
#include <algorithm>

long long count_tastiness(long long x, std::vector<long long> a) {
	std::vector<long long> val = {0};

	while(a.size() < 60) a.push_back(0);
	for(int i = 1; i < (int)a.size(); i++)
		a[i] = (1ll << i) * a[i] + a[i-1];

	for(int i = 0; i < 60; i++) {
		long long pot = (1ll << i);
		int last = std::upper_bound(val.begin(), val.end(), a[i] / x - (1ll << i)) - val.begin();
		for(int j = 0; j < last; j++)
			val.push_back(val[j] + pot);
	}

	return val.size();
}
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