3-sum

input/code.cpp: In function 'int main()':
input/code.cpp:16:5: error: 'sort' was not declared in this scope
     sort(begin(v),end(v));
     ^~~~
input/code.cpp:16:5: note: suggested alternative: 'qsort'
     sort(begin(v),end(v));
     ^~~~
     qsort

//#include <bits/stdc++.h>
#include <iostream>
#include <vector>

using namespace std;

int main() {
    int n;
    cin >> n;
    vector<int> v;
    for(int i=0;i<n;i++) {
      int c;
      cin >> c;
      v.push_back(c);
    }
    sort(begin(v),end(v));
    cout << *(end(v)-1) << " " << *(end(v)-2) << " " << *(end(v)-3) << endl;
}