using System;
using System.Collections.Generic;
using System.Text;

namespace P2rilus {
    class Pangaarve: ISummeerija {
        int saldo;
        public void Alusta() {
            saldo = 0;
        }

        public void Lisa(int kogus) {
            saldo = saldo + kogus;
        }

        public int KysiSumma() {
            return saldo;
        }
    }
}