백준 소스코드 [C++] 14921 용액 합성하기

www.acmicpc.net/problem/14921

14921번: 용액 합성하기

백준 소스코드 [C++] 14921 용액 합성하기

#include <iostream>
#include <algorithm>
#include <queue>
#include <string.h>
#include <limits.h>
#include <vector>
#include <math.h>
#include <stack>
#include <bitset>
#include <string>
#include <set>
#define all(v) v.begin(), v.end()
#define pii pair<int,int>
#define make_unique(v) v.erase(unique(v.begin(), v.end()), v.end())
typedef long long ll;
using namespace std;


int n;
vector<int> v;
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> n; v.resize(n);
	for (int i = 0;i < n;i++) cin >> v[i];
	int L = 0, R = n-1, here=abs(v[L]+v[R]),there;
	int l = 0, r = n-1;
	while (L<R) {
		there = v[L] + v[R];
		if (here > abs(there)) {
			here = abs(there);
			l = L, r = R;
		}
		if (there < 0) L++;
		else R--;
	}
	cout << v[l] + v[r];
	return 0;
}