Method query

src/class201/Code07_Network1.java:229–237

(int c, int x, int y)

	}

	public static int query(int c, int x, int y) {
		int u = node(c, x);
		int v = node(c, y);
		if (findroot(u) != findroot(v)) {
			return -1;
		}
		split(u, v);
		return maxv[v];
	}

	public static void main(String[] args) throws Exception {
		FastReader in = new FastReader(System.in);