#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  cin>>s;
  for(int i=0;i<s.size()-1;i++)
  {
      if(s[i]==s[i+1]){
    cout<<i+1<<" "<<i+2<<endl;return 0;}
  }
  for(int i=0;i<s.size()-2;i++)
  {
      if(s[i]==s[i+2]){
    cout<<i+1<<" "<<i+3<<endl;return 0;}
  }
  cout<<"-1 -1"<<endl;




}
