fn add_tile(&mut self, b: BasinId) {
        // let p = self.find_basin(b);
        self.basins[b as usize] += 1;
        // p
    }
/// Adds a tile to the given basin
Adds a tile to the given basin
Adds a tile to the given basin
fn add_tile(&mut self, b: BasinId) {
        // let p = self.find_basin(b);
        self.basins[b as usize] += 1;
        // p
    }
fn add_tile ( & mut self , b : BasinId ) { // let p = self.find_basin(b); self . basins [ b as usize ] += 1 ; // p }
Adds a tile to the given basin
Adds a tile to the given basin
&mut self
b
BasinId