$1$ The Blue Ticket Problem

You have a blue lottery ticket, with ints $a,b,$ and $c$ on it$.$ This makes three pairs, which we'll call $ab,bc,$ and $ac.$ Consider the sum of the numbers in each pair. If any pair sums to exactly $10,$ the result is $10.$ Otherwise if the ab sum is exactly $10$ more than either bc or ac sums, the result is $5.$ Otherwise the result is $0.$ You will print the result. Here are some samples.

input of $9,1,010$

input of $9,2,00$

input of $6\mathrm{.}1,4$