static box Main {
    main() {
        local out = ""
        local s = "abc"
        local i = 0
        loop(i < 3) {
            if i >= 3 { break }
            local ch = s.substring(i, i + 1)
            out = out + ch
            i = i + 1
        }
        print(out.length())
        return 0
    }
}