fixes: 1. do not skip over first non-empty line; 2. skip over all empty lines

1_longest_substring_with_k_distinct_characters.cpp

@@ -24,6 +24,7 @@ struct semicolon_is_space : std::ctype<char> {
     return &rc[0];
   };
 };
+
 class input {
 public:
   std::string s;
@@ -33,9 +34,7 @@ public:
 };
 
 std::istream &operator>>(std::istream &in, input &i) {
-  std::getline(in, i.s, '\n'); // An inelegant hack to skip newline character
-  std::getline(in, i.s, ';');
-  in >> i.k;
+  in >> i.s >> i.k;
   return in;
 }
 
@@ -128,10 +127,10 @@ int main(int argc, char *argv[]) {
   std::vector<test_case> test_cases;
   semicolon_is_space delimeter;
   for (int i = 1; i < argc; i++) {
-    test_case t;
     std::ifstream f(argv[i]);
     f.imbue(std::locale(f.getloc(), new semicolon_is_space));
     while (f.good()) {
+      test_case t;
       f >> t;
       if (t.i.s.length()) { // skip empty line/string inputs
         std::cout << t;