제출 #825190

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
825190		fatemetmhr	비스킷 담기 (IOI20_biscuits)	C++17	0 / 100	19 ms	440 KiB

biscuits

//  ~ Be Name Khoda ~  //

#include "biscuits.h"
#include <bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops,Ofast")

using namespace std;

typedef long long ll;

#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second

const int maxn  =  1e6   + 10;
const int maxn5 =  5e5   + 10;
const int maxnt =  1.2e6 + 10;
const int maxn3 =  1e3   + 10;
const int mod   =  1e9   + 7;
const ll  inf   =  1e18;

ll x, sum[100];


vector <ll> solve(int i, vector <ll> need){
	vector <ll> av;
	if(i == -1){
		av.resize(int(need.size()) + 1);
		fill(all(av), 1);
		return av;
	}
	need.pb(sum[i]);
	//cout << i << ' ' << need.size() << ' ' << sum[i] << endl;
	for(auto y : need){
		if(y >= (1ll << i) * x)
			av.pb(y - (1ll << i) * x);
		else
			av.pb(y);
	}
	av = solve(i - 1, av);
	for(int j = 0; j < int(av.size()) - 1; j++){
		if(need[j] >= (1ll << i) * x)
			av[j] += av.back();
		//cout << i << ' ' << j << ' ' << need[j] << ' ' << av[j] << endl;
	}
	av.pop_back();
	return av;
}

long long count_tastiness(long long xx, std::vector<long long> a) {
	x = xx;
	for(int i = 0; i < int(a.size()); i++){
		sum[i] = a[i] * (1ll << i);
		if(i)
			sum[i] += sum[i - 1];
	}
	for(int i = a.size(); i < 60; i++)
		sum[i] = sum[i - 1];
	vector <ll> av;
	av = solve(59, av);
	//cout << "hey " << av.size() << endl;
	return av.back();
}

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