fn main() { let mut k = String::new(); std::io::stdin().read_line(&mut k).ok(); let k: usize = k.trim().parse().unwrap(); if k == 0 { println!("2, 0"); return; } let kstr = format!("{:b}", k).chars().map(|c| c as usize - '0' as usize).collect::>(); let n = 2 + kstr.len(); let mut lines = vec![(n-1, n)]; for size in 1..=n-2 { for start in 1.. { let end = start + size; if end >= n { break; } lines.push((start, end)); } } for start in 2..=n-2 { let idx = n-1-start; if kstr[idx] == 1 { lines.push((start, n)); } } println!("{} {}", n, lines.len()); for &(l, r) in lines.iter() { println!("{} {}", l, r); } }