Submission #666947

#	Time	Username	Problem	Language	Result	Execution time	Memory
666947		djs100201	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	2 ms	1000 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>

using namespace std;
using ll = long long;
map<ll, ll>mp;
vector<ll>pre;
ll f(ll x) {
	if (x <= 0)return 0;
	if (x == 1)return x;
	if (mp.find(x) != mp.end())return mp[x];
	int bit = __lg(x - 1);
	return mp[x]=f(1ll << bit) + f(min(x, 1 + pre[bit]) - (1ll << bit));
}
long long count_tastiness(long long x, vector<long long> a) {
	ll k = a.size(), sum = 0;
	for (ll i = 0; i < k; i++) {
		sum += (a[i] << i);
		pre.push_back(sum / x);
	}
	for (int i = k; i <= 60; i++)pre.push_back(sum / x);
	return f(sum + 1);
}

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