[백준] 2798 c++ 블랙잭

https://www.acmicpc.net/problem/2798

2798번: 블랙잭

합들을 저장해주고 

내림차순으로 정렬후 

첫번째 값을 출력해줬다.

#include <iostream>
#include <algorithm>
#include <vector>
#include <array>
#include <cmath>
#include <functional>
#include <string>

using namespace std;
void fastIO();

int main()
{
	int N, M;
	vector<int> vec;
	vector<int> inVec;
	int num;
	int sum;

	cin >> N >> M;
	for (auto i = 0; i < N; i++)
	{
		cin >> num;
		inVec.push_back(num);
	}

	for (auto i = 0; i < N; i++)
	{
		for (auto j = i + 1; j < N; j++)
		{
			for (auto k = j + 1; k < N; k++)
			{
				sum = inVec[i] + inVec[j] + inVec[k];
				if (sum <= M)
					vec.push_back(sum);
			}
		}
	}

	sort(vec.begin(), vec.end(), greater<>());
	cout << vec.front();
}

void fastIO()
{
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
}