#include <bits/stdc++.h>
     
using namespace std;

int main() {
	string s; cin >> s;
	if(s.size()==2) {
		if(s[0]==s[1]) {
			cout << 1 << " " << 2 << endl;
			return 0;
		}
	}
	for(int i=0;i<s.size()-2;++i) {
		if(s[i]==s[i+1]||s[i]==s[i+2]||s[i+1]==s[i+2]) {
			cout << i+1 << " " << i+3 << endl;
			return 0;
		}
	}
	cout << -1 << " " << -1 << endl;
	
	return 0;
}