There are three airports A, B and C, and flights between each pair of airports in both directions.

A one-way flight between airports A and B takes $P$ hours, a one-way flight between airports B and C takes $Q$ hours, and a one-way flight between airports C and A takes $R$ hours.

Consider a route where we start at one of the airports, fly to another airport and then fly to the other airport.

What is the minimum possible sum of the flight times?

Input is given from Standard Input in the following format:

```
$P$ $Q$ $R$
```

Print the minimum possible sum of the flight times.

-   $1 \leq P,Q,R \leq 100$
-   All values in input are integers.

4

• The sum of the flight times in the route A $\rightarrow$ B $\rightarrow$ C: $1 + 3 = 4$ hours
• The sum of the flight times in the route A $\rightarrow$ C $\rightarrow$ C: $4 + 3 = 7$ hours
• The sum of the flight times in the route B $\rightarrow$ A $\rightarrow$ C: $1 + 4 = 5$ hours
• The sum of the flight times in the route B $\rightarrow$ C $\rightarrow$ A: $3 + 4 = 7$ hours
• The sum of the flight times in the route C $\rightarrow$ A $\rightarrow$ B: $4 + 1 = 5$ hours
• The sum of the flight times in the route C $\rightarrow$ B $\rightarrow$ A: $3 + 1 = 4$ hours

The minimum of these is $4$ hours.