Problem:
Score : 500 points

Problem Statement

Takahashi has decided to work on K days of his choice from the N days starting with tomorrow.

You are given an integer C and a string S. Takahashi will choose his workdays as follows:

After working for a day, he will refrain from working on the subsequent C days.

If the i-th character of S is x, he will not work on Day i, where Day 1 is tomorrow, Day 2 is the day after tomorrow, and so on.

Find all days on which Takahashi is bound to work.

Constraints

1 \leq N \leq 2 \times 10^5

1 \leq K \leq N

0 \leq C \leq N

The length of S is N.

Each character of S is o or x.

Takahashi can choose his workdays so that the conditions in Problem Statement are satisfied.

Input

Input is given from Standard Input in the following format:

N K C
S

Output

Print all days on which Takahashi is bound to work in ascending order, one per line.

Sample Input 1

11 3 2
ooxxxoxxxoo

Sample Output 1

6

Takahashi is going to work on 3 days out of the 11 days. After working for a day, he will refrain from working on the subsequent 2 days.

There are four possible choices for his workdays: Day 1,6,10, Day 1,6,11, Day 2,6,10, and Day 2,6,11.

Thus, he is bound to work on Day 6.

Sample Input 2

5 2 3
ooxoo

Sample Output 2

1
5

There is only one possible choice for his workdays: Day 1,5.

Sample Input 3

5 1 0
ooooo

Sample Output 3

There may be no days on which he is bound to work.

Sample Input 4

16 4 3
ooxxoxoxxxoxoxxo

Sample Output 4

11
16

Solution in Rust (1.15.1) (judge verdict: Accepted)

// This code is generated by [cargo-atcoder](https://github.com/tanakh/cargo-atcoder)
// Original source code:
/*
#![allow(unused_mut)]
#![allow(bare_trait_objects)]
#![allow(unused_imports)]
#![allow(unused_macros)]
// #![allow(dead_code)]

// https://github.com/tanzaku/rust-procon-lib
#[macro_use]
extern crate rust_procon_lib;

use rust_procon_lib::modcomb::*;
use rust_procon_lib::modint::*;
use rust_procon_lib::scanner::*;
use rust_procon_lib::tree::*;

// make_modint!(MOD_1000000007);
// make_modcomb!();

fn main() {
    let mut sc = Scanner::from_stdin();
    let n = sc.usize();
    let k = sc.usize();
    let c = sc.i64();
    let s = sc.chars();

    let mut l = vec![0; n + 1];
    let mut r = vec![0; n + 1];
    let mut ans = Vec::new();

    let mut rest = 0;
    for i in 0..n {
        l[i + 1] = l[i];
        if rest <= 0 && s[i] == 'o' {
            rest = c + 1;
            l[i + 1] += 1;
        }
        rest -= 1;
    }

    let mut rest = 0;
    for i in (0..n).rev() {
        r[i] = r[i + 1];
        if rest <= 0 && s[i] == 'o' {
            rest = c + 1;
            r[i] += 1;
        }
        rest -= 1;
    }

    // eprintln!("{:?} {:?} {}", l, r, k);

    for i in 0..n {
        if l[i] + r[i + 1] < k {
            ans.push(i + 1);
        }
    }
    ans.iter().for_each(|v| println!("{}", v));
}
*/

fn main() {
    let exe = "/tmp/bin4CAFE967";
    std::io::Write::write_all(&mut std::fs::File::create(exe).unwrap(), &decode(BIN)).unwrap();
    std::fs::set_permissions(exe, std::os::unix::fs::PermissionsExt::from_mode(0o755)).unwrap();
    std::process::exit(std::process::Command::new(exe).status().unwrap().code().unwrap())
}

fn decode(v: &str) -> Vec<u8> {
    let mut ret = vec![];
    let mut buf = 0;
    let mut tbl = vec![64; 256];
    for i in 0..64 { tbl[TBL[i] as usize] = i as u8; }
    for (i, c) in v.bytes().filter_map(|c| { let c = tbl[c as usize]; if c < 64 { Some(c) } else { None } }).enumerate() {
        match i % 4 {
            0 => buf = c << 2,
            1 => { ret.push(buf | c >> 4); buf = c << 4; }
            2 => { ret.push(buf | c >> 2); buf = c << 6; }
            3 => ret.push(buf | c),
            _ => unreachable!(),
        }
    }
    ret
}

const TBL: &'static [u8] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const BIN: &'static str = "<base64-encoded ELF executable removed>";