public static long cal ( int l ) {
  int ti [ ] = new int [ 3 ] ;
  ti [ 0 ] = ( l + a + b - c + 1 ) / 2 ;
  ti [ 1 ] = ( l + a + c - b + 1 ) / 2 ;
  ti [ 2 ] = ( l + c + b - a + 1 ) / 2 ;
  for ( int i = 0 ;
  i < 3 ;
  i ++ ) if ( ti [ i ] <= 0 ) return 0 ;
  ;
}

public static long cal ( int l ) { int ti [ ] = new int [ 3 ] ; ti [ 0 ] = ( l + a + b - c + 1 ) / 2 ; ti [ 1 ] = ( l + a + c - b + 1 ) / 2 ; ti [ 2 ] = ( l + c + b - a + 1 ) / 2 ; for ( int i = 0 ; i < 3 ; i ++ ) if ( ti [ i ] <= 0 ) return 0 ; ; }
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