1874_스택 수열

시간초과 : endl -> '\n'으로, scanf, printf로

#include<iostream>
#include<vector>
#include<algorithm>
#include<stack>
using namespace std;

int main() {
    int n;
    cin >> n;
    vector<int> v;
    stack<int> s;
    vector<char> result;
    int num = 1;
    result.push_back('+');
    s.push(num);
    num++;
    for (int i = 0; i < n; i++) {
        int x;
        cin >> x;
        v.push_back(x);
    }
    int pointer = 0;
    while (1) {
        if (num > n + 1) {
            cout << "NO";
            return 0;
        }
        if (pointer >= n) {
            break;
        }
        
            if (!s.empty()&&v[pointer] == s.top()) {
                result.push_back('-');
                s.pop();
                pointer++;
            }
        
        else {
            result.push_back('+');
            s.push(num);
            num++;
        }
    }
    
        for (int i = 0; i < result.size(); i++) {
            cout << result[i] << '\n';
        }
}