Submission #432310

#	Time	Username	Problem	Language	Result	Execution time	Memory
432310		Mlxa	Packing Biscuits (IOI20_biscuits)	C++14	9 / 100	1081 ms	332 KiB

biscuits

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define all(x) x.begin(), x.end()
#define mp make_pair
#define mt make_tuple
#define x first
#define y second
#include "biscuits.h"

bool bit(ll m, int i) {
	return (m >> i) & 1;
}

ll count_tastiness(ll x, vector<ll> a) {
	auto check = [&](ll y) {
		vector<ll> b = a;
		b.resize(61, 0);
		for (int k = 60; k >= 0; --k) {
			if (!bit(y, k)) {
				continue;
			}
			for (ll it = x; it--; ) {
				ll need = 1;
				for (int pos = k; pos >= 0 && need; --pos) {
					ll delta = min(need, b[pos]);
					b[pos] -= delta;
					need -= delta;
					need *= 2;
				}
				if (need) {
					return false;
				}
			}
		}
		return true;
	};
	ll sum = 0;
	for (int i = 0; i < (int)a.size(); ++i) {
		sum += a[i] << i;
	}
	ll answer = 0;
	for (ll y = 0; x * y <= sum; ++y) {
		if (check(y)) {
			++answer;
		}
	}
	return answer;
}

#ifdef LC
#include "grader.cpp"
#endif

• Subtask 1: 9 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23