My MacBook pros charger is broken after being at the beach?

So we went on vacation to the beach and there was a lot of sand in my room (where my 2016 MacBook Pro was)
And now only one of the 4 USB C thingies work for charging
They all work fine for plugging in **** but only the one wants to charge it
And back home without sand it charged fine in those holes

Ruan2017-01-01T06:30:36Z

And like all I want to know is will they work again once I clean em

chrisjbsc2017-01-01T09:34:09Z

Ruined...