Submission #402426


Source Code Expand

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;

class Myon
{
    public Myon() { }
    public static int Main()
    {
        new Myon().calc();
        return 0;
    }

    Scanner cin;

    void calc()
    {
        cin = new Scanner();
        int N = cin.nextInt();
        int[] H = new int[N];
        int[] S = new int[N];
        for (int i = 0; i < N; i++)
        {
            H[i] = cin.nextInt();
            S[i] = cin.nextInt();
        }

        long left = 0; //達成不可能な最大数
        long right = (long)1e18; //達成可能な最小数
        while (right - left > 1)
        {
            long mid = (left + right) / 2;
            if (check(H, S, mid)) right = mid;
            else left = mid;
        }
        Console.WriteLine(right);
    }

    bool check(int[] H, int[] S, long mid)
    {
        int N = H.Length;
        int[] bucket = new int[N + 1];
        for (int i = 0; i < N; i++)
        {
            if (H[i] > mid) return false;
            int sec = (int)Math.Min(N, (mid - H[i]) / S[i]);
            bucket[sec]++;
        }
        int count = 0;
        for (int i = 0; i < N; i++)
        {
            count += bucket[i];
            if (count > i + 1) return false;
        }
        return true;
    }
}





class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        i = 0;
        return s[i++];
    }

    public int nextInt()
    {
        return int.Parse(next());
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }

}

Submission Info

Submission Time
Task D - 射撃王
User chokudai
Language C# (Mono 3.2.1.0)
Score 100
Code Size 2094 Byte
Status AC
Exec Time 504 ms
Memory 29004 KB

Judge Result

Set Name Sample Subtask1 Subtask2
Score / Max Score 0 / 0 30 / 30 70 / 70
Status
AC × 2
AC × 17
AC × 32
Set Name Test Cases
Sample subtask0-sample01.txt, subtask0-sample02.txt
Subtask1 subtask0-sample01.txt, subtask0-sample02.txt, subtask1-01.txt, subtask1-02.txt, subtask1-03.txt, subtask1-04.txt, subtask1-05.txt, subtask1-06.txt, subtask1-07.txt, subtask1-08.txt, subtask1-09.txt, subtask1-10.txt, subtask1-11.txt, subtask1-12.txt, subtask1-13.txt, subtask1-14.txt, subtask1-15.txt
Subtask2 subtask0-sample01.txt, subtask0-sample02.txt, subtask1-01.txt, subtask1-02.txt, subtask1-03.txt, subtask1-04.txt, subtask1-05.txt, subtask1-06.txt, subtask1-07.txt, subtask1-08.txt, subtask1-09.txt, subtask1-10.txt, subtask1-11.txt, subtask1-12.txt, subtask1-13.txt, subtask1-14.txt, subtask1-15.txt, subtask2-01.txt, subtask2-02.txt, subtask2-03.txt, subtask2-04.txt, subtask2-05.txt, subtask2-06.txt, subtask2-07.txt, subtask2-08.txt, subtask2-09.txt, subtask2-10.txt, subtask2-11.txt, subtask2-12.txt, subtask2-13.txt, subtask2-14.txt, subtask2-15.txt
Case Name Status Exec Time Memory
subtask0-sample01.txt AC 124 ms 8440 KB
subtask0-sample02.txt AC 121 ms 8476 KB
subtask1-01.txt AC 121 ms 8476 KB
subtask1-02.txt AC 123 ms 8400 KB
subtask1-03.txt AC 122 ms 8424 KB
subtask1-04.txt AC 121 ms 8472 KB
subtask1-05.txt AC 122 ms 8456 KB
subtask1-06.txt AC 122 ms 8488 KB
subtask1-07.txt AC 124 ms 8472 KB
subtask1-08.txt AC 121 ms 8444 KB
subtask1-09.txt AC 121 ms 8420 KB
subtask1-10.txt AC 123 ms 8488 KB
subtask1-11.txt AC 123 ms 8476 KB
subtask1-12.txt AC 123 ms 8476 KB
subtask1-13.txt AC 121 ms 8464 KB
subtask1-14.txt AC 121 ms 8476 KB
subtask1-15.txt AC 141 ms 8480 KB
subtask2-01.txt AC 127 ms 8620 KB
subtask2-02.txt AC 130 ms 9244 KB
subtask2-03.txt AC 134 ms 10044 KB
subtask2-04.txt AC 203 ms 17424 KB
subtask2-05.txt AC 309 ms 24656 KB
subtask2-06.txt AC 394 ms 28848 KB
subtask2-07.txt AC 457 ms 28656 KB
subtask2-08.txt AC 490 ms 28860 KB
subtask2-09.txt AC 491 ms 28908 KB
subtask2-10.txt AC 448 ms 28944 KB
subtask2-11.txt AC 494 ms 28912 KB
subtask2-12.txt AC 491 ms 28912 KB
subtask2-13.txt AC 463 ms 28944 KB
subtask2-14.txt AC 495 ms 29004 KB
subtask2-15.txt AC 504 ms 28892 KB