static int sumFibonacci ( int k ) {
  int l = ( k * ( k - 1 ) ) / 2 ;
  int r = l + k ;
  int sum = calculateSum ( l , r - 1 ) ;
  return sum ;
}

static int sumFibonacci ( int k ) { int l = ( k * ( k - 1 ) ) / 2 ; int r = l + k ; int sum = calculateSum ( l , r - 1 ) ; return sum ; }
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