title: Length Longest Sub String Can Make Removed
signature: function lengthLongestSubStringCanMakeRemoved($s) {
test_code: <?php
  
  
  // SOLUTION CODE 
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function validateSolution($actual, $expected){
      return serialize($actual) == serialize($expected);
  }
  
  function driver($s, $expected){
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME($s), $expected)){
          return "PASSED";
        }
        return "FAILED";
      }
      catch (Exception $exception_obj) {
        return get_class($exception_obj);
      }
  }
  
  function main(){
      printf("TEST-0...%s\n",driver(
        "U", 
        0));
      
      printf("TEST-1...%s\n",driver(
        "544", 
        0));
      
      printf("TEST-2...%s\n",driver(
        "111", 
        0));
      
      printf("TEST-3...%s\n",driver(
        " cDQaNxpRSOe", 
        0));
      
      printf("TEST-4...%s\n",driver(
        "42920062459", 
        0));
      
      printf("TEST-5...%s\n",driver(
        "00100101", 
        3));
      
      printf("TEST-6...%s\n",driver(
        "FiC", 
        0));
      
      printf("TEST-7...%s\n",driver(
        "302746335230", 
        0));
      
      printf("TEST-8...%s\n",driver(
        "1", 
        0));
      
      printf("TEST-9...%s\n",driver(
        "ZBLHiwGreUR ", 
        0));
      
  }
  
  main();
  ?>
source_py: def length_longest_sub_string_can_make_removed(S):
      arr = []
      arr.append(['@', (- 1)])
      maxlen = 0
      for i in range(len(S)):
          arr.append([S[i], i])
          while ((len(arr) >= 3) and (arr[(len(arr) - 3)][0] == '1') and (arr[(len(arr) - 2)][0] == '0') and (arr[(len(arr) - 1)][0] == '0')):
              arr.pop()
              arr.pop()
              arr.pop()
          tmp = arr[(- 1)]
          maxlen = max(maxlen, (i - tmp[1]))
      return maxlen
source_cpp: int length_longest_sub_string_can_make_removed(string str) {
    vector < pair < char, int > > arr;
    arr . push_back ( {
      '@', - 1 }
      );
      int maxlen = 0;
      for ( int i = 0;
      i < str . length ( );
      ++ i ) {
        arr . push_back ( {
          str [ i ], i }
          );
          while ( arr . size ( ) >= 3 && arr [ arr . size ( ) - 3 ] . first == '1' && arr [ arr . size ( ) - 2 ] . first == '0' && arr [ arr . size ( ) - 1 ] . first == '0' ) {
            arr . pop_back ( );
            arr . pop_back ( );
            arr . pop_back ( );
          }
          int tmp = arr . back ( ) . second;
          maxlen = max ( maxlen, i - tmp );
        }
        return maxlen;
      }