#[allow(unused_imports)] use std::cmp::{max, min, Ordering}; #[allow(unused_imports)] use std::collections::{HashMap, HashSet}; mod util { use std::io::stdin; use std::str::FromStr; use std::fmt::Debug; #[allow(dead_code)] pub fn line() -> String { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); line.trim().to_string() } #[allow(dead_code)] pub fn get() -> T where ::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); line.trim().parse().unwrap() } #[allow(dead_code)] pub fn gets() -> Vec where ::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); line.split_whitespace() .map(|t| t.parse().unwrap()) .collect() } #[allow(dead_code)] pub fn get2() -> (T, U) where ::Err: Debug, ::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); let mut iter = line.split_whitespace(); ( iter.next().unwrap().parse().unwrap(), iter.next().unwrap().parse().unwrap(), ) } #[allow(dead_code)] pub fn get3() -> (S, T, U) where ::Err: Debug, ::Err: Debug, ::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); let mut iter = line.split_whitespace(); ( iter.next().unwrap().parse().unwrap(), iter.next().unwrap().parse().unwrap(), iter.next().unwrap().parse().unwrap(), ) } } // std::cmp::Reverse doesn't have Clone. #[derive(Eq, PartialEq, Clone)] struct Rev(pub T); impl PartialOrd for Rev { fn partial_cmp(&self, other: &Rev) -> Option { other.0.partial_cmp(&self.0) } } impl Ord for Rev { fn cmp(&self, other: &Rev) -> Ordering { other.0.cmp(&self.0) } } #[allow(unused_macros)] macro_rules! debug { ($x: expr) => { println!("{}: {:?}", stringify!($x), $x) } } fn main() { let abcd: Vec = util::gets(); let a = abcd[0]; let b = abcd[1]; let c = abcd[2]; let d = abcd[3]; if a == b && b == c { if c < 2 { println!("-1"); return; } let mut o = Vec::new(); o.push((0, 1)); o.push((1, 0)); for i in 2..c { o.push((0, i)); } if o.len() > d { println!("-1"); return; } println!("{} {}", c, o.len()); for &(f, t) in &o { println!("{} {}", f, t); } return; } if a == c { let mut o = Vec::new(); o.push((1, 0)); let mut v = 2; for _ in 0..c - 1 { o.push((0, v)); v += 1; } for _ in 0..b - 1 - c { o.push((1, v)); v += 1; } if o.len() > d { println!("-1"); return; } println!("{} {}", v, o.len()); for &(f, t) in &o { println!("{} {}", f, t); } return; } if b == c { let mut o = Vec::new(); o.push((0, 1)); let mut v = 2; for _ in 0..c - 1 { o.push((1, v)); v += 1; } for _ in 0..a - 1 - c { o.push((0, v)); v += 1; } if o.len() > d { println!("-1"); return; } println!("{} {}", v, o.len()); for &(f, t) in &o { println!("{} {}", f, t); } return; } let mut o = Vec::new(); let mut v = 2; for _ in 0..a - c - 1 { o.push((0, v)); v += 1; } for _ in 0..b - c - 1 { o.push((1, v)); v += 1; } if c > 0 { o.push((0, v)); o.push((1, v)); v += 1; for _ in 1..c { o.push((v - 1, v)); v += 1; } } if o.len() > d { println!("-1"); return; } println!("{} {}", v, o.len()); for &(f, t) in &o { println!("{} {}", f, t); } return; }