Submission #3236351


Source Code Expand

import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.PriorityQueue;
import java.util.Scanner;
import java.util.Comparator;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        DKatanaThrower solver = new DKatanaThrower();
        solver.solve(1, in, out);
        out.close();
    }

    static class DKatanaThrower {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt(), h = in.nextInt();
            PriorityQueue<DKatanaThrower.Action> a = new PriorityQueue<>(Comparator.comparing(x -> -x.damage));
            for (int i = 0; i < n; i++) {
                a.add(new DKatanaThrower.Action(false, in.nextInt()));
                a.add(new DKatanaThrower.Action(true, in.nextInt()));
            }
            int ans = 0;
            while (h > 0) {
                DKatanaThrower.Action x = a.poll();
                if (!x.last) {
                    ans += (h + x.damage - 1) / x.damage;
                    break;
                }
                h -= x.damage;
                ans++;
            }
            out.println(ans);
        }

        private static class Action {
            boolean last = false;
            int damage = 0;

            public Action(boolean last, int damage) {
                this.last = last;
                this.damage = damage;
            }

        }

    }
}

Submission Info

Submission Time
Task D - Katana Thrower
User mikit
Language Java8 (OpenJDK 1.8.0)
Score 400
Code Size 1809 Byte
Status AC
Exec Time 771 ms
Memory 103588 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 4
AC × 24
Set Name Test Cases
Sample a01, a02, a03, a04
All a01, a02, a03, a04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24
Case Name Status Exec Time Memory
a01 AC 172 ms 24532 KB
a02 AC 169 ms 25300 KB
a03 AC 175 ms 24532 KB
a04 AC 173 ms 26196 KB
b05 AC 177 ms 24652 KB
b06 AC 732 ms 96720 KB
b07 AC 174 ms 26696 KB
b08 AC 722 ms 74096 KB
b09 AC 176 ms 26580 KB
b10 AC 186 ms 26576 KB
b11 AC 180 ms 26324 KB
b12 AC 183 ms 24788 KB
b13 AC 659 ms 83664 KB
b14 AC 771 ms 84972 KB
b15 AC 666 ms 83000 KB
b16 AC 658 ms 83748 KB
b17 AC 648 ms 94896 KB
b18 AC 670 ms 93984 KB
b19 AC 717 ms 88308 KB
b20 AC 693 ms 95136 KB
b21 AC 771 ms 101888 KB
b22 AC 760 ms 103588 KB
b23 AC 178 ms 26196 KB
b24 AC 263 ms 31520 KB