제출 #1019004

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1019004		j_vdd16	비스킷 담기 (IOI20_biscuits)	C++17	0 / 100	1 ms	600 KiB

biscuits

#include <algorithm>
#include <bitset>
#include <cstdint>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <math.h>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

#define int long long
#define ll long long
#define loop(X, N) for(int X = 0; X < (N); X++)
#define all(V) V.begin(), V.end()
#define rall(V) V.rbegin(), V.rend()

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;


int count_tastiness(int x, vi a)
{
	constexpr int N = 61;
	while (a.size() < N)
		a.push_back(0);

	int sum = 0;
	loop(i, N)
		sum += a[i] * (1LL << i);

	int result = 0;
	//for (int y = 0; y <= sum; y++)
	//{
	//	bool success = true;
	//	int count = 0;

	//	loop(bit, N)
	//	{
	//		count += a[bit] * (1LL << bit);
	//		if ((y & (1LL << bit)) == 0)
	//			continue;

	//		if (count / x < (1LL << bit))
	//		{
	//			success = false;
	//			break;
	//		}

	//		count -= x * (1LL << bit);
	//	}

	//	//cout << y << ": " << success << endl;
	//	result += success;
	//}
	
	//result = 1;

	int extra = 0;
	int possible = 1;
	int lastI = 0;
	loop(i, N - 1)
	{
		if (a[i] > 0)
		{
			possible *= 2;
			extra += (a[i] - 1) * (1LL << (i - lastI));
		}
		else
		{
			if (extra >= possible)
			{
				extra -= possible;
				possible *= 2;
			}
			else
			{
				possible += extra;
				extra = 0;
				lastI = i + 1;
			}
		}

		//cout << "pos: " << possible << ' ' << extra << endl;
	}

	return possible + extra;
}


//signed main()
//{
//	cout << count_tastiness(3, { 5, 2, 1 }) << endl;
//	cout << count_tastiness(2, { 2, 1, 2 }) << endl;
//	cout << count_tastiness(2, { 2, 2, 1 }) << endl;
//	cout << count_tastiness(2, { 0, 4, 1 }) << endl;
//	cout << count_tastiness(2, { 4, 1 }) << endl;
//
//	return 0;
//}

컴파일 시 표준 에러 (stderr) 메시지

biscuits.cpp: In function 'long long int count_tastiness(long long int, vi)':
biscuits.cpp:43:6: warning: unused variable 'result' [-Wunused-variable]
   43 |  int result = 0;
      |      ^~~~~~

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