제출 #370073

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
370073		MilosMilutinovic	비스킷 담기 (IOI20_biscuits)	C++14	0 / 100	1194 ms	1650408 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int N=61;
map<ll, ll> dp;
ll pref[N], x;

ll Solve(ll n) {
	if(n<=0)
		return 0LL;
	if(n==1)
		return 1LL;
	if(dp.find(n)!=dp.end())
		return dp[n];
	ll i=__lg(n-1);
	ll ans=Solve((ll)(1<<i))+Solve(min(n,pref[i]/x+1)-(ll)(1<<i));
	return dp[n]=ans;
}

ll count_tastiness(ll X, vector<ll> a) {
	x=X;
	dp.clear();
	for(int i=0; i<(int)a.size(); ++i)
		pref[i]=(i>0?pref[i-1]:0LL)+a[i]*(ll)(1<<i);
	for(int i=(int)a.size(); i<=60; ++i)
		pref[i]=pref[i-1];
	return Solve(pref[60]);
}

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