Compilare: warning: unreachable statement --> main.rs:31:5 | 29 | return; | ------ any code following this expression is unreachable 30 | 31 | let mut a = String::new(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement | = note: `#[warn(unreachable_code)]` on by default warning: unused variable: `output` --> main.rs:23:9 | 23 | let mut output = BufWriter::new(File::create("curatenie.out").unwrap()); | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output` | = note: `#[warn(unused_variables)]` on by default warning: unused variable: `n` --> main.rs:27:9 | 27 | let n : usize = n.trim().parse().unwrap(); | ^ help: if this is intentional, prefix it with an underscore: `_n` warning: unused variable: `a` --> main.rs:33:9 | 33 | let a : Vec<i32> = a.split(" ").map(|x| x.trim().parse::<i32>().unwrap() - 1).collect(); | ^ help: if this is intentional, prefix it with an underscore: `_a` warning: unused variable: `b` --> main.rs:39:9 | 39 | let b : Vec<i32> = b.split(" ").map(|x| x.trim().parse::<i32>().unwrap() - 1).collect(); | ^ help: if this is intentional, prefix it with an underscore: `_b` warning: variable does not need to be mutable --> main.rs:23:9 | 23 | let mut output = BufWriter::new(File::create("curatenie.out").unwrap()); | ----^^^^^^ | | | help: remove this `mut` | = note: `#[warn(unused_mut)]` on by default warning: 6 warnings emitted