Initialising the table with - 1
for ( int i = 0 ; i < 1002 ; i ++ ) for ( int j = 0 ; j < 10 ; j ++ ) for ( int k = 0 ; k < 2 ; k ++ ) for ( int l = 0 ; l < 2 ; l ++ ) dp [ i ] [ j ] [ k ] [ l ] = - 1 ;