Backpacking

#include <sstream>
#include <iostream>
using namespace std;

int main()
{
  string arr;
  getline(cin, arr);

  stringstream ss(arr);
  int value;
  int sum = 0;
  while (ss >> value)
  {
    sum = sum + value;
  }
  cout << sum << endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED