Submission #577063

#	Time	Username	Problem	Language	Result	Execution time	Memory
577063		Benqt	Balloons (CEOI11_bal)	Java	Compilation error	0 ms	0 KiB

bal

import java.io.*;
import java.util.*;

public class ballonsJavabrowtf {
	public static void main(String[] args) throws IOException {
		Kattio io = new Kattio();
		int n = io.nextInt();
		double[][] arr = new double[n][2];
		for (int i=0; i<n; i++) {
			arr[i][0] = io.nextDouble();
			arr[i][1] = io.nextDouble();
		}

		Stack<double[]> st = new Stack<>();
		for (int i=0; i<n; i++) {
			while (!st.isEmpty()) {
				double[] cur = st.peek();
				double h = arr[i][0] - cur[0];
				double r = (h * h)/(4 * cur[1]);
				arr[i][1] = Math.min(arr[i][1], r);
				if (r >= cur[1]) {
					st.pop();
				} else {
					break;
				}
			}
			st.add(arr[i]);
			System.out.println(arr[i][1]);
		}

	}

	static class Kattio extends PrintWriter {
		private BufferedReader r;
		private StringTokenizer st;

		// standard input
		public Kattio() { this(System.in, System.out); }
		public Kattio(InputStream i, OutputStream o) {
			super(o);
			r = new BufferedReader(new InputStreamReader(i));
		}
		// USACO-style file input
		public Kattio(String problemName) throws IOException {
			super(new FileWriter(problemName + ".out"));
			r = new BufferedReader(new FileReader(problemName + ".in"));
		}

		// returns null if no more input
		public String next() {
			try {
				while (st == null || !st.hasMoreTokens())
					st = new StringTokenizer(r.readLine());
				return st.nextToken();
			} catch (Exception e) { }
			return null;
		}

		public int nextInt() { return Integer.parseInt(next()); }
		public double nextDouble() { return Double.parseDouble(next()); }
		public long nextLong() { return Long.parseLong(next()); }
	}
}

Compilation message (stderr)

bal.java:4: error: class ballonsJavabrowtf is public, should be declared in a file named ballonsJavabrowtf.java
public class ballonsJavabrowtf {
       ^
1 error