class Main {
    
    func Proc() {
        let inputCount = Int(readLine()!)!
        var dic = [Int:Int]()
        var cntMax = 0
        var ans = 0
        for _ in 0..<inputCount {
            let inpt = readLine()!.map{ $0 }.filter{ $0 == "^" }.count
            if let num = dic[inpt] {
                dic[inpt] = num + 1
            } else {
                dic[inpt] = 1
            }
            if dic[inpt]! == cntMax {
                if ans < inpt {
                    ans = inpt
                    cntMax = dic[inpt]!
                }
            } else if dic[inpt]! > cntMax {
                ans = inpt
                cntMax = dic[inpt]!
            }
        }
        print(ans)
    }
    
}


Main().Proc()