PROB3.cpp

#include <bits/stdc++.h>
using namespace std;

int main() {
  freopen("SN.TXT"  , "r", stdin );
  freopen("TONG.TXT", "w", stdout);
  int x, tong = 0;
  cout << "Tong cua cac so ";
  while (cin >> x) {
    if (x > 0) {
      cout << x << ' ';
      tong += x;
    }
  }
  cout << "la: " << tong;
}