- if (isPaired && arr.size() != 2 || !isPaired && arr.size() != 1) return;
- for (int i = 0; i < (int)arr.size(); i++) samwrite(out, arr[i]);
+ if ((isPaired && arr.size() != 2) || (!isPaired && arr.size() != 1)) return;
+ for (size_t i = 0; i < arr.size(); i++) samwrite(out, arr[i]);