public static int calc ( int [ ] [ ] red , int [ ] [ ] blue , int n ) {
  int ret = 0 , maxtemp = - 1 , index = 0 , maxindex = 0 , flag = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    index = 0 ;
    flag = 0 ;
    maxtemp = - 1 ;
    while ( index < n && red [ index ] [ 0 ] < blue [ i ] [ 0 ] ) {
      if ( maxtemp <= red [ index ] [ 1 ] && red [ index ] [ 1 ] < blue [ i ] [ 1 ] ) {
        maxtemp = red [ index ] [ 1 ] ;
        maxindex = index ;
        flag = 1 ;
      }
      index ++ ;
    }
    if ( flag == 1 ) {
      ret ++ ;
      red [ maxindex ] [ 1 ] = 201 ;
    }
  }
  return ret ;
}

public static int calc ( int [ ] [ ] red , int [ ] [ ] blue , int n ) { int ret = 0 , maxtemp = - 1 , index = 0 , maxindex = 0 , flag = 0 ; for ( int i = 0 ; i < n ; i ++ ) { index = 0 ; flag = 0 ; maxtemp = - 1 ; while ( index < n && red [ index ] [ 0 ] < blue [ i ] [ 0 ] ) { if ( maxtemp <= red [ index ] [ 1 ] && red [ index ] [ 1 ] < blue [ i ] [ 1 ] ) { maxtemp = red [ index ] [ 1 ] ; maxindex = index ; flag = 1 ; } index ++ ; } if ( flag == 1 ) { ret ++ ; red [ maxindex ] [ 1 ] = 201 ; } } return ret ; }
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