Submission #468631

#	Time	Username	Problem	Language	Result	Execution time	Memory
468631		Vectorized	Balloons (CEOI11_bal)	Java	50 / 100	2083 ms	31276 KiB

bal

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
import java.util.Stack;
import java.util.StringTokenizer;

public class bal {

    static class Node{
        double x;
        double r;
        Node(double x, double r){
            this.x = x;
            this.r = r;
        }
    }

    private static DecimalFormat df = new DecimalFormat("0.000");

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int n = Integer.parseInt(st.nextToken());
        Stack<Node> s = new Stack<Node>();
        for (int i = 0; i < n; i++) {
            st = new StringTokenizer(br.readLine());
            double curx = Double.parseDouble(st.nextToken()), curr = Double.parseDouble(st.nextToken());
            while (s.size() > 0){
                double newr = 1.0 * (1.0 * (s.peek().x - curx) * (s.peek().x - curx)) / (4.0 * s.peek().r);
                curr = Math.min(curr, newr);
                if(curr > s.peek().r){
                    s.pop();
                }else {
                    break;
                }
            }
            System.out.println(df.format(curr));
            s.add(new Node(curx, curr));
        }
    }
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10