give array integer num integer k a continuous subarray call nice k odd number itreturn number nice subarray Example 1input num 11211 k 3output 2explanation the subarray 3 odd number 1121 1211example 2input num 246 k 1output 0explanation there odd number arrayexample 3input num 2221221222 k 2Output 16 Constraints1 numslength 500001 numsi 1051 k numslength