competitive_prog_templ.rs

#![allow(unused_macros, unused_imports, dead_code)]

use std::io::*;
use std::collections::*;

fn read_line() -> String {
    let mut s = String::new();
    stdin().read_line(&mut s).unwrap();
    s
}

macro_rules! from_iter {
    ($($a:ident),+ = $it:expr) => {
        $(let $a;)+
        {
            let mut _it = $it.into_iter();
            $($a = _it.next().unwrap();)+
            assert!(_it.next().is_none());
        }
    };
}

macro_rules! from_str {
    ($($a:ident : $t:ty),+ = $s:expr) => {
        $(let $a: $t;)+
        {
            let mut _it = $s.split_whitespace();
            $($a = _it.next().unwrap().parse().unwrap();)+
            assert!(_it.next().is_none());
        }
    };
}

macro_rules! from_line {
    ($($a:ident : $t:ty),+) => {
        $(let $a: $t;)+
        {
            let _line = read_line();
            let mut _it = _line.trim().split_whitespace();
            $($a = _it.next().unwrap().parse().unwrap();)+
            assert!(_it.next().is_none());
        }
    };
}

macro_rules! print_var_fmt {
    ($e:expr) => {
        concat!(stringify!($e), ":\t{}")
    };
    ($e:expr, $($es: expr),+) => {
        concat!(print_var_fmt!($e), ",\t", print_var_fmt!($($es),+))
    };
}

macro_rules! dbg {
    ($($es:expr),+) => {
        writeln!(&mut io::stderr(), print_var_fmt!($($es),*), $($es),*);
    };
}

fn main() {


}