k1.kt

/**
 * Created by alex on 15.02.14.
 */

fun main(args: Array<String>) {
    var s = readLine()!!

    var first = s!!.indexOf('1')
    var last = s!!.lastIndexOf('1')

    if (first == -1) {
        println(0)
    } else {
        var maxDist = 0
        var bestX = first
        var bestY = first
        var prevP = first
        var lastZero = false
        for (i in first+1..last) {
            if (lastZero && s[i] == '1') {
                lastZero = false
                var delta = i - prevP;
                if (delta > maxDist) {
                    maxDist = delta
                    bestX = prevP
                    bestY = i
                }
                prevP = i
            }
            if (s[i] == '0') {
                lastZero = true
            }
        }

        if (bestX != bestY) {
            var one = last - first
            var two = (bestX - first) + (last - bestY)
            if (one < two) {
                println("1")
                println("${first + 1} ${last + 1}")
            } else {
                println("2")
                println("${first + 1} ${bestX + 1}")
                println("${bestY+ 1} ${last + 1}")
            }
        }
        else {
            println("1")
            println("${first + 1} ${last + 1}")
        }
    }
}