Submission #1989576


Source Code Expand

import std.algorithm, std.array, std.conv, std.exception, std.stdio, std.string;
void main()
{
    auto cond = readln.chomp.split.map!(to!int);
    immutable n = cond[0], h = cond[1];
    int[] a, b;
    foreach (i; 0..n)
    {
        auto buf = readln.chomp.split.map!(to!int);
        a ~= buf[0];
        b ~= buf[1];
    }
    solve(h, a, b).writeln;
}
auto solve(int h, int[] _as, int[] _bs)
{
    auto a = _as.reduce!max;
    int answer;
    foreach (b; _bs.sort!((x, y) => x > y).filter!(b => a < b))
    {
        h -= b;
        answer += 1;
        if (h <= 0)
            return answer;
    }
    return answer + h.divceil(a);
}
auto divceil(int numerator, int denominator)
{
    return numerator / denominator + !!(numerator % denominator);
}

Submission Info

Submission Time
Task D - Katana Thrower
User majiang
Language D (DMD64 v2.070.1)
Score 400
Code Size 787 Byte
Status AC
Exec Time 111 ms
Memory 4476 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 1 ms 256 KB
a02 AC 1 ms 256 KB
a03 AC 1 ms 256 KB
a04 AC 1 ms 256 KB
b05 AC 1 ms 256 KB
b06 AC 111 ms 2556 KB
b07 AC 1 ms 256 KB
b08 AC 111 ms 2556 KB
b09 AC 1 ms 256 KB
b10 AC 1 ms 256 KB
b11 AC 1 ms 256 KB
b12 AC 1 ms 256 KB
b13 AC 79 ms 3452 KB
b14 AC 78 ms 3708 KB
b15 AC 78 ms 4220 KB
b16 AC 78 ms 4476 KB
b17 AC 96 ms 4092 KB
b18 AC 91 ms 2556 KB
b19 AC 84 ms 3964 KB
b20 AC 88 ms 2556 KB
b21 AC 93 ms 2556 KB
b22 AC 93 ms 4092 KB
b23 AC 1 ms 256 KB
b24 AC 3 ms 508 KB