fun main(args: Array<String>) {

    var input: CharArray?
    var stack: Int
    var n: Int

    var lines = readLine()?.toIntOrNull() ?: -1

    while (lines-- > 0) {
        input = readLine()?.toCharArray()
        stack = 0
        n = 0

        input?.forEach {
            if (it == '<')
                stack++
            else if (it == '>')
                if (stack-- > 0)
                    n++

        }

        println("$n")
    }
}