excel - Formula to SUM values that are flagged -


basically, wish sum values in 1 column when row marked or flagged. eg:

flag|value 1   |14     |23 1   |3 1   |7

so formula return 24.

i can achieve if dedicate each row column display value if there flag. sum column total. however, not wish dedicate column extract values in each row.

is there way of achieving this?

it doable sumif, of more general availability: 

=sumif(a:a,1,b:b)

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