use proconio::input;

fn main() {
    input!{
        s: String,
    };

    let mut cs = s.chars();
    let l = s.len();

    if l == 2 {
        let a = cs.next().unwrap();
        let b = cs.next().unwrap();

        if a == b {
            println!("1 2");
        } else{    
            println!("-1 -1");
        }

        return
    }

    let mut past_chars = [' '; 3];
    past_chars[1] = cs.next().unwrap();
    past_chars[2] = cs.next().unwrap();

    for i in 2..l {
        past_chars[0] = past_chars[1];
        past_chars[1] = past_chars[2];
        past_chars[2] = cs.next().unwrap();

        let mut sorting = [' '; 3];
        sorting.copy_from_slice(&past_chars);
        sorting.sort();

        if sorting[0] == sorting[1] || sorting[1] == sorting[2] {
            println!("{} {}", {i-1}, {i+1});
            return;
        }
    }

    println!("-1 -1");
}