Submission #341644

#	Time	Username	Problem	Language	Result	Execution time	Memory
341644		keko37	Packing Biscuits (IOI20_biscuits)	C++14	21 / 100	1094 ms	33588 KiB

biscuits

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

using namespace std;

typedef long long llint;

const int MAXN = 70;
const llint B = 31337;

llint x;
llint a[MAXN], dp[MAXN], pref[MAXN];
unordered_map <llint, llint> mp;

llint calc (int pos, llint ost) {
	if (pos == 65) return 1;
	llint h = pos * B + ost;
	if (mp.find(h) != mp.end()) return mp[h];
	llint res = calc(pos + 1, (ost + a[pos]) / 2);
	if (ost + a[pos] >= x) {
		res += calc(pos + 1, (ost + a[pos] - x) / 2);
	}
	return mp[h] = res;
}

llint count_tastiness (llint X, vector <llint> A) {
	x = X;
	for (int i = 0; i <= 65; i++) a[i] = 0;
	for (int i = 0; i < (int)A.size(); i++) a[i] = A[i];
	mp.clear();
	return calc(0, 0);
}

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