Add a random value in a vector in R

I have a numeric vector

vect <- c(0,16,11,132,0,0,0,18,28,245,0,0,55,45,19,30,20,0,0,0,12,0)

There are four series of values not equal to zero.

(16,11,132), (18,28,245), (55,45,19,30,20), (12)

For 1/4 of series (one serie) randomly choosed, I want to add a random integer value between -10 and 10.

For example, if the chosen serie is the second one and the chosen value is -5 the result will be

vect2 <- c(0,16,11,132,0,0,0,13,23,240,0,0,55,45,19,30,20,0,0,0,12,0)

This is an example of only one row, the function will be applied to the entire matrix