use std::io::Read; fn get_word() -> String { let stdin = std::io::stdin(); let mut stdin=stdin.lock(); let mut u8b: [u8; 1] = [0]; loop { let mut buf: Vec = Vec::with_capacity(16); loop { let res = stdin.read(&mut u8b); if res.unwrap_or(0) == 0 || u8b[0] <= b' ' { break; } else { buf.push(u8b[0]); } } if buf.len() >= 1 { let ret = String::from_utf8(buf).unwrap(); return ret; } } } #[allow(dead_code)] fn get() -> T { get_word().parse().ok().unwrap() } fn main() { let k: i64 = get(); let n = 32; let mut e = vec![]; for i in 1..n { for j in i + 1..n { e.push((i, j)); } } for i in 0..30 { if (k & 1 << i) != 0 { e.push((0, n - 2 - i)); } } println!("{} {}", n, e.len()); for (a, b) in e { println!("{} {}", a + 1, b + 1); } }