Chef Rating

At the end of year 2020 Chef had rating $P$. In year 2021 Chef has given $N$ contest(s). You are given an array of $N$ elements depicting increase or decrease in Chef's rating (rating which he has gained or lost after every contest). What's the current rating of Chef? **Note:** Chef's current rating can be negative. ### Input The first line contains two integers $P$ and $N$. The second line has