Change elements of array based on position of input data

[Cola_Reb]

Hey everyone, hope you are doing great these days. I have a difficult problem with my data processing and hope you could help me:

I have some input data of the following form: Number of entries to come, Entries...

Example:

(...)

4 1 3 4 5

2 2 5

1 6

(...)

At the same time I have an array with only zero/false entries and now I always need a true/1 entry at the position corresponding to the entries of the first array. Example:

array([[True, False, True, True, True, False],

[False, True, False, False, True, False],

[False, False, False, False, False, True]])

Is there a smooth way to iterate over my input data and add a True/1 to the second array at the corresponding position in the array below?