[C++][STL] Vector-Erase

https://www.hackerrank.com/challenges/vector-erase/problem

 

 

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    int n, x, temp, a, b;
    vector<int> N;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> temp;
        N.push_back(temp);
    }
    cin >> x >> a >> b;
    
    vector<int>::iterator iter = N.begin();
    iter -= 1;
    N.erase(iter + x);
    N.erase(iter + a, iter + b);
    
    cout << N.size() << endl;
    for (int i = 0; i < N.size(); i++) cout << N[i] << " ";
    return 0;
}