process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.on('SIGINT', function(){
    input_stdin_array = input_stdin.split("\n");
    main();
    process.exit();
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

function main() {
	var s = readLine();	
	
	
	for (var i=0; i + 1 < s.length; i++){
		if (s[i] == s[i+1]){
			console.log((i+1).toString() + " " + (i+2).toString());
			return;
		}
	}
	for (var i=0; i + 2 < s.length; i++){
		if (s[i] == s[i+2]){
			console.log((i+1).toString() + " " + (i+3).toString());
			return;
		}
	}
	
	console.log("-1 -1");
}