[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

solutions/gold/cf-468B.mdx

@@ -38,16 +38,17 @@ struct DSU {
 
 	// get representive component (uses path compression)
 	int get(int x) { return e[x] < 0 ? x : e[x] = get(e[x]); }
-	
+
 	bool same_set(int a, int b) { return get(a) == get(b); }
-	
+
 	int size(int x) { return -e[get(x)]; }
-	
+
 	bool unite(int x, int y) {  // union by size
 		x = get(x), y = get(y);
 		if (x == y) return false;
 		if (e[x] > e[y]) swap(x, y);
-		e[x] += e[y]; e[y] = x;
+		e[x] += e[y];
+		e[y] = x;
 		return true;
 	}
 };