Submission #2855999

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Source Code Expand

extern crate core;

use std::io::{self, Read};

#[macro_use]
mod parser {
    macro_rules! input {
    ($s:expr=>$($t:tt)*) => {
        let mut lines=$s.split("\n");
        $(
            line_parse!(lines,$t);
        )*
    };
    }

    macro_rules! line_parse {
    ($lines:expr,($($name:ident:$t:tt)*)) => {
        let mut line=$lines.next().unwrap().split_whitespace();
        $(value_def!(line,$name,$t);)*
    };

    //複数行
    ($lines:expr,{$n:expr;$name:ident:$t:tt}) => {
        values_def!($lines,$n,$name,$t);
    };
    }

    macro_rules! value_def {
        ($line:expr, $name:ident, $t:tt) => {
            let $name = value!($line, $t);
        };
    }

    macro_rules! values_def {
        ($lines:expr, $n:expr, $name:ident, $t:tt) => {
            let $name = {
                let mut vec = Vec::new();
                for i in 0..$n {
                    let mut next = $lines.next().unwrap().split_whitespace();
                    vec.push(value!(next, $t));
                }
                vec
            };
        };
    }

    macro_rules! value {
    //配列
    ($line:expr,[$t:tt]) => {
        $line.map(|x|{
        let mut iter=::std::iter::once(x);
        value!(iter,$t)
        }).collect::<Vec<_>>()
    };
    //タプル
    ($line:expr,($($t:tt),*)) => {
        ($(value!($line,$t),)*)
    };
    //文字列
    ($line:expr,#) => {
        $line.next().unwrap()
    };
    //単一値
    ($line:expr,$t:ty) => {
        $line.next().unwrap().parse::<$t>().unwrap()
    };
    }
}

use std::cmp::{max, min};

macro_rules! max {
  ($x:expr) => {
    $x
  };
  ($x:expr, $($xs:tt)+) => {
    max($x,max!($($xs)+))
  };
}

macro_rules! min {
  ($x:expr) => {
    $x
  };
  ($x:expr, $($xs:tt)+) => {
    min($x,min!($($xs)+))
  };
}

fn main() {
    let mut input = String::new();
    io::stdin().read_to_string(&mut input).unwrap();
    let output = solve(input.trim().to_string());
    println!("{}", output);
}

fn solve(input: String) -> String {
    //0.25,0.5,1,2
    input!(input=>(q:i64 h:i64 s:i64 d:i64)(n:i64));
    let one = min!(q * 4, h * 2, s);
    if n % 2 == 0 {
        min(one * n, d * (n / 2))
    } else {
        min(one * n, d * (n / 2) + one)
    }.to_string()
}

macro_rules! tests {
    ($($name:ident: $input:expr=>$output:expr,)*) => {
        mod tests {
            $(
                #[test]
                fn $name() {
                    assert_eq!($output.trim().to_string(),super::solve($input.trim().to_string()));
                }
            )*
        }
    }
}

tests! {
    test1: "20 30 70 90\n3" => "150",
    test2: "10000 1000 100 10\n1" => "100",
    test3: "10 100 1000 10000\n1" => "40",
    test4: "12345678 87654321 12345678 87654321\n123456789" => "1524157763907942",
}

Submission Info

Compile Error

warning: unused import: `max`, #[warn(unused_imports)] on by default
  --> ./Main.rs:70:16
   |
70 | use std::cmp::{max, min};
   |                ^^^

Judge Result