message: Update 15_Two Sum.cpp
diff: @@ -63,10 +63,14 @@ int main()
  while (T--)
  {
  - int n;
  + int n,a;
  + a=0;
  cin >> n;
  std::vector<int> nums(n);
  -
  + if(a==1)
  + {
  + return;
  + }
  for (int i = 0; i < n; i++) {
  cin >> nums[i];
  }
  