public static (MonsterStatus right, MonsterStatus left) GenerateTwoMonster(int level)
    {//確率による計算 あとで直す
        var monsterRight = GenerateOneMonster(level);
        var monsterLeft  = GenerateOneMonster(level);
        var bmOut        = MathUtility.BoxMuller(120, 30);//難易度に関わる


        int heighExp = 0;
        int lowExp   = 0;

        if (bmOut.Z1 > bmOut.Z2)
        {
            heighExp = (int)(bmOut.Z1 > 50 ? bmOut.Z1 : 50);
            lowExp   = (int)(bmOut.Z2 > 50 ? bmOut.Z2 : 50);
        }
        else
        {
            heighExp = (int)(bmOut.Z2 > 50 ? bmOut.Z2 : 50);
            lowExp   = (int)(bmOut.Z1 > 50 ? bmOut.Z1 : 50);
        }

        int rightAmountStatus = monsterRight.attack + monsterRight.defense;
        int leftAmountStatus  = monsterLeft.attack + monsterLeft.defense;

        if (rightAmountStatus > leftAmountStatus)
        {
            monsterRight.exp = heighExp;
            monsterLeft.exp  = lowExp;
        }
        else
        {
            monsterRight.exp = lowExp;
            monsterLeft.exp  = heighExp;
        }
        return(monsterRight, monsterLeft);
    }