Robotti

use std::io::{BufRead, stdin};

fn main() {
    let handle = stdin().lock();
    let mut lines = handle.lines();

    let _h: usize = lines.next().unwrap().unwrap().parse().unwrap();
    let p: String = lines.next().unwrap().unwrap();

    let mut askeleet = 0;
    let mut keratyt = 0;

    let mut huoneet: Vec<usize> = Vec::new();
    let mut r: usize = 0;

    for (i, char) in p.chars().enumerate() {
        if char != '.' {
            huoneet.push(i);
            if char == 'R' {
                r = i;
            }
        }
    }

    let mut vasen = huoneet.iter().position(|&x| x == r).unwrap();
    let mut oikea = vasen;

    while vasen > 0 || oikea < huoneet.len() - 1 {
        let matka_vasen = if vasen > 0 {
            (r as isize - huoneet[vasen - 1] as isize).abs() as usize
        } else {
            usize::MAX
        };

        let matka_oikea = if oikea < huoneet.len() - 1 {
            (huoneet[oikea + 1] as isize - r as isize).abs() as usize
        } else {
            usize::MAX
        };

        if matka_vasen < matka_oikea {
            let lahin = huoneet[vasen - 1];
            askeleet += matka_vasen;
            if lahin != r {
                keratyt += 1;
            }
            r = lahin;
            vasen -= 1;
        } else if matka_oikea < matka_vasen {
            let lahin = huoneet[oikea + 1];
            askeleet += matka_oikea;
            if lahin != r {
                keratyt += 1;
            }
            r = lahin;
            oikea += 1;
        } else {
            break;
        }
    }
    println!("{} {}", askeleet, keratyt);
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: ACCEPTED

Test 7

Group: 1, 2

Verdict: ACCEPTED

Test 8

Group: 1, 2

Verdict: ACCEPTED

Test 9

Group: 1, 2

Verdict: ACCEPTED

Test 10

Group: 1, 2

Verdict: ACCEPTED

Test 11

Group: 1, 2

Verdict: ACCEPTED

Test 12

Group: 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: ACCEPTED

Test 14

Group: 2

Verdict: ACCEPTED

Test 15

Group: 2

Verdict: ACCEPTED

Test 16

Group: 2

Verdict: ACCEPTED

Test 17

Group: 2

Verdict: ACCEPTED

Test 18

Group: 2

Verdict: ACCEPTED

Test 19

Group: 2

Verdict: ACCEPTED

Test 20

Group: 2

Verdict: ACCEPTED

Test 21

Group: 2

Verdict: ACCEPTED

Test 22

Group: 2

Verdict: ACCEPTED

Test 23

Group: 2

Verdict: ACCEPTED

Test 24

Group: 2

Verdict: ACCEPTED